Podcasts about Planetary science

John Holdren is the Teresa and John Heinz Research Professor for Science and International Affairs at Harvard University's Kennedy School of Government and co-director of the Science, Technology, and Public Policy Program at the School's Belfer Center for Science and International Affairs. He is a former Professor of Environmental Science and Policy in the Department of Earth and Planetary Sciences, and Affiliated Professor in the John A. Paulson School of Engineering and Applied Science. He is also President Emeritus and Senior Advisor to the President at the Woodwell Climate Research Center, a pre-eminent, independent, environmental-research organization. From 2009 to 2017, Holdren was President Obama's Science Advisor and Director of the White House Office of Science and Technology Policy, becoming the longest-serving Science Advisor to the President in the history of the position. Before joining Harvard, was a professor of energy resources at the University of California, Berkeley, where he founded and led the interdisciplinary graduate-degree program in energy and resources. Prior to that he was a theoretical physicist in the Theory Group of the Magnetic Fusion Energy Division at the Lawrence Livermore National Laboratory and a Senior Research Fellow at Caltech. He has been a member of the Board of Trustees of the MacArthur Foundation and Chairman of the Committee on International Security and Arms Control at the National Academy of Sciences. During the Clinton Administration, he served for both terms on the President's Council of Advisors on Science and Technology, leading multiple studies on energy-technology innovation and nuclear arms control. He is a member of the U.S. National Academy of Sciences, the U.S. National Academy of Engineering, the American Philosophical Society, the American Academy of Arts and Sciences, the American Academy of Political and Social Science, and the Council on Foreign Relations. He is also a foreign member of the Royal Society of London and the Indian National Academy of Engineering and a former President of the American Association for the Advancement of Science. His many honors include one of the first MacArthur Prize Fellowships (1981) and the Moynihan Prize of the American Academy of Political and Social Sciences. In 1995, he gave the acceptance speech for the Nobel Peace Prize on behalf of the Pugwash Conferences on Science and World Affairs, an international organization of scientists and public figures. He holds SB and SM degrees from MIT in aeronautics and astronautics and a Ph.D. from Stanford in aeronautics and astronautics and theoretical plasma physics.Jennifer Spence is the Director of the Arctic Initiative at Harvard Kennedy School's Belfer Center for Science and International Affairs, with expertise related to sustainable development, international governance, institutional effectiveness, and public policy. Spence currently co-chairs the Arctic Research Cooperation and Diplomacy Research Priority Team for the Fourth International Conference on Arctic Research Planning (ICARP IV), participates as a member of the Climate Expert Group for the Arctic Council's Arctic Monitoring and Assessment Programme, and sits as a member of the Yukon Arctic Security Advisory Council. Spence was the Executive Secretary of the Arctic Council's Sustainable Development Working Group from 2019-2023. Previously, she taught and conducted research at Carleton University and worked for a 2-year term at the United Nations Development Programme. She also worked for 18 years with the Government of Canada in senior positions related to resource management, conflict and change management, strategic planning, and leadership development. Spence holds a Ph.D. in public policy from Carleton University, a MA from Royal Roads University in conflict management and analysis, and a BA in political science from the University of British Columbia.Ralph Ranalli of the HKS Office of Communications and Public Affairs is the host, producer, and editor of HKS PolicyCast. A former journalist, public television producer, and entrepreneur, he holds an BA in political science from UCLA and a master's in journalism from Columbia University.Scheduling and logistical support for PolicyCast is provided by Lilian Wainaina.Design and graphics support is provided by Laura King and the OCPA Design Team. Web design and social media promotion support is provided by Catherine Santrock and Natalie Montaner. Editorial support is provided by Nora Delaney and Robert O'Neill. 

The search for life beyond Earth is no longer science fiction—it takes a lot of data, powerful telescopes and a bit of cosmic detective work. And at the center of this search is University of Chicago astrophysicist Jacob Bean. Bean was part of the team that made history by detecting carbon dioxide in the atmosphere of a distant planet using the James Webb Space Telescope—a major step forward in our ability to study exoplanets.Bean uses cutting-edge tools and discoveries that are reshaping how we think about planet habitability, biosignatures and our place in the universe. From potentially habitable exoplanets like K2-18b to false hopes like Gliese 486b, Bean shares why the atmospheres of these faraway worlds might hold the key to one of humanity's oldest questions: Are we alone in the universe?

This talk explores the Universe's journey from its homogeneous beginnings after the Big Bang to the formation of stars from primordial hydrogen and helium. Through nuclear fusion, stars produced light elements, and their dramatic deaths as supernovae forged elements up to iron. The Zwicky Transient Facility, a cutting-edge 2-telescope project, systematically studies the dynamic Universe. The speaker will discuss remarkable discoveries, including super-luminous supernovae, new transient phenomena, supernova progenitors, planets being engulfed by aging stars, and an abundance of pulsating and binary stars. Speaker Shrinivas R. Kulkarni, George Ellery Hale Professor of Astronomy and Planetary Science, California Institute of Technology (Caltech) In collaboration with Center for Astrophysics and Space Science

With more than 70% of its surface covered in water, Earth is rightly known as the "blue planet". But where did this water - so essential to life - originate? While some theories suggest that hydrogen was delivered to Earth from space via asteroids, new research indicates that the building blocks for water may have been present on our planet all along. We chat to Tom Barrett from Oxford's Department of Earth Sciences to find out more.    

Jake and Anthony are joined by Dante Lauretta, Principal Investigator of NASA's OSIRIS-REx mission, and Professor of Planetary Science at the University of Arizona, to talk about—take a guess!—returning and studying pristine samples from Bennu.TopicsOff-Nominal - YouTubeEpisode 195 - Dirtiest Thing in the Cleanroom (with Dante Lauretta) - YouTubeDante Lauretta | Lunar and Planetary Laboratory & Department of Planetary Sciences | The University of ArizonaNASA's OSIRIS-REx Mission to Asteroid BennuAbundant ammonia and nitrogen-rich soluble organic matter in samples from asteroid (101955) Bennu | Nature AstronomyAn evaporite sequence from ancient brine recorded in Bennu samples | NatureContamination monitoring of the OSIRIS-REx ISO5 asteroid sample cleanroom - NASA Technical Reports Server (NTRS)NASA's Asteroid Bennu Sample Reveals Mix of Life's Ingredients - NASASurprising Phosphate Finding in NASA's OSIRIS-REx Asteroid Sample - NASANASA's Bennu Asteroid Sample Contains Carbon, Water - NASANASA's First Asteroid Sample Has Landed, Now Secure in Clean Room - NASAOSIRIS-APEX - NASA ScienceNASA Asteroid Sampling Mission Renamed OSIRIS-APEX for New Journey - NASAFollow Off-NominalSubscribe to the show! - Off-NominalSupport the show, join the DiscordOff-Nominal (@offnom) / TwitterOff-Nominal (@offnom@spacey.space) - Spacey SpaceFollow JakeWeMartians Podcast - Follow Humanity's Journey to MarsWeMartians Podcast (@We_Martians) | TwitterJake Robins (@JakeOnOrbit) | TwitterJake Robins (@JakeOnOrbit@spacey.space) - Spacey SpaceFollow AnthonyMain Engine Cut OffMain Engine Cut Off (@WeHaveMECO) | TwitterMain Engine Cut Off (@meco@spacey.space) - Spacey SpaceAnthony Colangelo (@acolangelo) | TwitterAnthony Colangelo (@acolangelo@jawns.club) - jawns.club

This week we look at how the elimination of science programs, projects, datasets, and funding may be shaping into an extinction-level event for US Space-related sciences. Come cry with us.

Somewhere out past Mars in the early hours of Easter Monday, a space probe called Lucy whizzed by an asteroid named Donaldjohanson.Lucy then sent back images showing Donaldjohanson is about five kilometres wide and shaped like a peanut.It's one of a handful of asteroids on Lucy's 12-year itinerary.So what does the billion-dollar mission hope to achieve?

Dr. Kevin France is an Assistant Professor in the Department for Astrophysical and Planetary Sciences as well as an investigator within the Laboratory for Atmospheric and Space Physics at the University of Colorado, Boulder. Kevin's research focuses on improving our understanding of planetary systems outside of our own solar system. His research helps determine how the earth was formed, how it came to look the way it does, and how it fits into the broader perspective of planetary systems throughout the galaxy. Kevin also does laboratory and space mission work to develop the technology that will allow them to answer these questions. Kevin spends his free time enjoying an outdoor lifestyle living in the Rocky Mountains in Colorado. His hobbies include hiking, skiing, biking, trail running, and spending time with his wife and 9-month old baby. He received his bachelor's degree in Physics and Astronomy from Boston University, and he was awarded his Ph.D. in Astrophysics from Johns Hopkins University. Afterwards, Kevin conducted research as a postdoctoral fellow at the University of Toronto. He next worked as a Research Associate and Fellow at the Center for Astrophysics and Space Astronomy at the University of Colorado, Boulder, and during this time, Kevin was awarded the NASA Nancy Grace Roman Technology Fellowship. Kevin joined us to chat about his work as well as his life outside the lab.

In this episode, we are joined by Dr. Erika Kohler, a Research Space Scientist at NASA's Goddard Space Flight Center in Greenbelt, MD. With a Ph.D. in Space and Planetary Science and a BS in Meteorology, Dr. Kohler's research focuses on providing laboratory data that can inform and validate scientific models and mission observations. She does this by designing innovative experiments that simulate the extreme environments found on other planets –  pushing the boundaries of laboratory research as we know it. Dr. Kohler has always been interested in weather and planets, and she built her career on studying these things in tandem. Setting her sights on our sister planet, Venus, she shares some intriguing insights on its atmosphere, surface, and more… Dive in now to find out: How data is collected for Venus. The complicated issues that come with landing a craft on the surface of Venus. How long it takes for probes to get to Venus, and the orbital mechanics that must be worked through. What isotopes and gasses can tell us about the history of Venus and its current conditions. New and exciting missions on the horizon. To learn more about Dr. Kohler and her work, click here now! Episode also available on Apple Podcasts: http://apple.co/30PvU9

# Journey Through the Cosmos: James Webb Space Telescope's Groundbreaking DiscoveriesExplore the awe-inspiring revelations from NASA's James Webb Space Telescope in this captivating episode of "Cosmic Horizons" with The Space Cowboy. Discover the unprecedented details of NGC 1514, a dying star ejecting intricate rings of gas and dust captured by Webb's MIRI instrument. Learn about the first-ever observation of a star consuming a Jupiter-sized planet and what this means for our own solar system's distant future. The episode also covers Webb's groundbreaking thermal detection of rocky exoplanet Trappist 1b, opening new possibilities for discovering potential extraterrestrial civilizations. Join us as we examine these astronomical breakthroughs while discussing the telescope's uncertain funding future despite its remarkable scientific contributions. Perfect for astronomy enthusiasts, space exploration fans, and anyone fascinated by our cosmic neighborhood.

In a recent study, Dr. Janice Bishop of the SETI Institute, along with postdoctoral researcher Adomas Valantinas from Brown University, propose that Mars' characteristic red hue is primarily due to ferrihydrite—a water-rich iron oxide mineral—rather than the previously assumed hematite. Analyses of data collected by Martian orbiters, rovers, and laboratory experiments showed that ferrihydrite closely matches the composition of the dust covering Mars' surface. Ferrihydrite typically forms in environments abundant in cool water, suggesting Mars once had significant liquid water on its surface. The research implies that Mars transitioned from a wet to a dry environment billions of years ago. Confirming these findings would require returning samples from Mars to Earth for comprehensive analysis. Join planetary scientist Beth Johnson for a chat with Dr. Bishop about the evidence for ferrihydrite and what it could have meant for life on Mars. (Recorded live 3 April 2025.)

Could there be life on Venus? Guest: Sara Seager, Astrophysicist and Professor of Physics, Planetary Science, and Aeronautics and Astronautics at MIT Learn more about your ad choices. Visit megaphone.fm/adchoices

Are political tensions making people reconsider parenthood? Guest: Zachary Neal, Professor of Psychology at Michigan State University Will the gun buyback program be revived? Guest: Dr. Noah Schwartz, Assistant Professor of Political Science at the University of the Fraser Valley and Author of “On Target: Gun Culture, Storytelling, and the NRA” Could there be life on Venus? Guest: Sara Seager, Astrophysicist and Professor of Physics, Planetary Science, and Aeronautics and Astronautics at MIT How a mouse watching the Matrix improved our knowledge of the brain Guest: Dr. Forrest Collman, Associate Director of Informatics at the Allen Institute for Brain Science How RFK Jr.'s policies can impact Canada Guest: Taylor Noakes, Independent Journalist and Public Historian from Montreal Who should be the MP for Port Moody–Coquitlam? Guest: Bonita Zarillo, NDP Candidate for Port Moody–Coquitlam Guest: Zoe Royer, Liberal Candidate for Port Moody–Coquitlam Guest: Paul Lambert, Conservative Candidate for Port Moody–Coquitlam Learn more about your ad choices. Visit megaphone.fm/adchoices

Megafloods are cataclysmic floods that are qualitatively different from weather-related floods. In the podcast, Vic Baker explains our ideas as to what causes megafloods and describes the striking evidence for such floods in the Channeled Scablands of Washington State and in the Mediterranean.Vic Baker has been studying megafloods for over 50 years.  He is a Professor of Hydrology and Atmospheric Sciences, Geosciences, and Planetary Sciences at the University of Arizona.

# Exploring the Cosmos: Latest James Webb Space Telescope Discoveries with The Space CowboyJourney through the universe's most fascinating recent discoveries in this captivating episode of Cosmic Frontiers. Join The Space Cowboy as he breaks down groundbreaking James Webb Space Telescope observations that are revolutionizing our understanding of space.Discover the unprecedented footage of a planet being slowly consumed by its star—not in one gulp as previously thought, but in a millions-of-years death spiral that's forcing scientists to reconsider our own solar system's fate. Learn about early galaxies with synchronized rotation patterns that suggest our universe itself might have been born spinning, potentially supporting mind-bending theories about cosmic origins.The episode also covers Webb's stunning revelations about unexpectedly bright hydrogen emissions from ancient galaxies, Neptune's magnificent auroras, dramatic protostellar jets, and detailed measurements of the scorching exoplanet Trappist-1b. Perfect for astronomy enthusiasts, science lovers, and anyone fascinated by the mysteries of our universe, this accessible deep dive into cosmic wonders will expand your perspective on space exploration and what Webb's revolutionary technology continues to unveil about our cosmic neighborhood.

Methane gas, planetary disks, and Martian sunsets, oh my! Shaun Duke and Paul Weimer are joined by John E. Moores for a discussion about the solar system, planetary science, Mars, and other wonders of our little corner in the universe! Unsurprisingly, we learned a lot, and so will you! Thanks for listening. We hope you enjoy the episode! Show Notes: If you have a question you'd like us to answer, feel free to shoot us a message on our contact page. Our new intro and outro music comes from Holy Mole. You can support his work at patreon.com/holymole. See you later, navigator!

More than 3 billion people rely on seafood as a primary source of animal protein. But waters are warming, and fish are moving. Are those fish, and the communities that have relied on them for centuries, in trouble? We go around the world, from the rocky shores of New England to the picturesque island of Niue, to investigate how three popular fish are doing. Along the way, we meet people who are protecting and regrowing these fish populations in different ways and learn about their challenges and successes. This episode features reporting by Barbara Moran at WBUR, which was produced as part of the Pulitzer Center's StoryReach U.S. Fellowship. Columbia University's Duy Linh Tu contributed to the reporting.   Guests:  Tessa M. Hill, Oceanographer and Professor, Earth and Planetary Sciences, UC Davis Mona Ainu'u, Minister for the Ministry of Natural Resources, Niue Jenn Caselle, Research Biologist, Marine Science Institute, UC Santa Barbara Climate One is hosting a series of live conversations as part of SF Climate Week 2025! Tickets for all four of our events, featuring leaders such as Jenny Odell, San José Mayor Matt Mahan, Rep. Jared Huffman, Abby Reyes, Margaret Gordon and two of this year's Goldman Prize winners are on sale now through the official SF Climate Week event calendar. Support Climate One by going ad-free! By subscribing to Climate One on Patreon, you'll receive exclusive access to all future episodes free of ads, opportunities to connect with fellow Climate One listeners, and access to the Climate One Discord. Sign up today. For show notes and related links, visit our website. Ad sales by Multitude. Contact them for ad inquiries at multitude.productions/ads Learn more about your ad choices. Visit megaphone.fm/adchoices

More than 3 billion people rely on seafood as a primary source of animal protein. But waters are warming, and fish are moving. Are those fish, and the communities that have relied on them for centuries, in trouble? We go around the world, from the rocky shores of New England to the picturesque island of Niue, to investigate how three popular fish are doing. Along the way, we meet people who are protecting and regrowing these fish populations in different ways and learn about their challenges and successes. This episode features reporting by Barbara Moran at WBUR, which was produced as part of the Pulitzer Center's StoryReach U.S. Fellowship. Columbia University's Duy Linh Tu contributed to the reporting.   Guests:  Tessa M. Hill, Oceanographer and Professor, Earth and Planetary Sciences, UC Davis Mona Ainu'u, Minister for the Ministry of Natural Resources, Niue Jenn Caselle, Research Biologist, Marine Science Institute, UC Santa Barbara Climate One is hosting a series of live conversations as part of SF Climate Week 2025! Tickets for all four of our events, featuring leaders such as Jenny Odell, San José Mayor Matt Mahan, Rep. Jared Huffman, Abby Reyes, Margaret Gordon and two of this year's Goldman Prize winners are on sale now through the official SF Climate Week event calendar. Support Climate One by going ad-free! By subscribing to Climate One on Patreon, you'll receive exclusive access to all future episodes free of ads, opportunities to connect with fellow Climate One listeners, and access to the Climate One Discord. Sign up today. Ad sales by Multitude. Contact them for ad inquiries at multitude.productions/ads Learn more about your ad choices. Visit megaphone.fm/adchoices

Let's take a fast-paced journey through all that's new in space and astronomy, including dark energy news, the death of supersymmetry, a closer look at remoting sensing in Earth science, and tales from the launch pad.

Let's take a fast-paced journey through all that's new in space and astronomy, including new results from Perseverance Rover, Venusian Volcanism, Mars Sample Return (or not), Intuitive Machines' failure to land upright, Firefly Aerospace's amazing success with Blue Ghost, and tales from the launch pad.

SpaceX has revolutionised space travel, making reusable rockets a reality and dramatically reducing the cost of reaching orbit. But two high-profile Starship explosions have raised concerns about the company's approach to innovation and risk.Commercial spaceflight has rapidly expanded, with private companies looking to harness space resources and build new economies beyond Earth. Reusability has been a game-changer, significantly lowering launch costs and enabling more ambitious missions.SpaceX operates with a philosophy of rapid iteration, treating test failures as learning opportunities rather than setbacks. While this approach has led to major breakthroughs, repeated failures raise questions about long-term reliability and safety. Meanwhile, growing competition from other private space firms suggests the industry is no longer dominated by a single player.With rivals gaining ground and technological hurdles ahead, does SpaceX still have the edge in the new space economy?Contributors: Professor Michelle Hanlon, Executive Director of the Center for Air and Space Law at the University of Mississippi School of Law in the USAJack Burns, Professor Emeritus in the Department of Astrophysical and Planetary Sciences and Professor Emeritus in the Department of Physics in the USADr Ella Atkins is Fred D. Durham Professor and Head of the Kevin T. Crofton Aerospace and Ocean Engineering Department at Virginia Tech in the USADavid Thomas is Director of the Thunderbird School of Global Management's Initiative for Space Leadership, Policy and Business at Arizona State University.Presenter Charmaine Cozier Producers Vicky Carter and Louise Clarke Researcher: Katie Morgan Editor Tara McDermott Production co-ordinator Liam Morrey Technical producer Matthew DempseyImage credit: Brandon Bell via Getty Images

# Exploring Cosmic Wonders: The James Webb Space Telescope's Revolutionary DiscoveriesJourney through the stars with The Space Cowboy as this captivating podcast episode unveils the James Webb Space Telescope's most groundbreaking discoveries. From the puzzling JADES-GS-z13-1 galaxy that's clearing cosmic fog just 330 million years after the Big Bang to the unexpected revelation that most galaxies spin in the same direction, this episode delivers astronomical insights with down-to-earth charm.Discover Webb's first-ever direct observation of carbon dioxide in exoplanet atmospheres, the mysterious weather patterns of free-floating planetary object SIMP 0136, and stunning flares from our Milky Way's central black hole. The episode also showcases Webb's breathtaking imagery of star formation in Herbig-Haro 49/50 and explores how massive early galaxies like JADES-GS-z7-0 are revolutionizing our understanding of cosmic evolution.Perfect for space enthusiasts, astronomy buffs, and anyone fascinated by our universe's deepest mysteries, this episode combines cutting-edge science with accessible storytelling that will leave you stargazing with newfound wonder.

How likely is an asteroid to impact Earth? Neil deGrasse Tyson and Chuck Nice sit down with planetary scientist Rick Binzel, the creator of the Torino Scale, to discuss asteroid hazards, the results of the asteroid sample return, and the search for Planet 9.NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free here: https://startalkmedia.com/show/asteroids-headed-towards-earth-with-rick-binzel/Thanks to our Patrons Euclid A LoGiudice, Todd Thedell, Girolamo Castaldo, Scott E Mann, Stephen Luick, Lou Perreault, Tom Womack, jonas dravland, Carla Garner, Matthew Smith, Marcy Hansen, Dale Schurman, David LoMonaco, Manoj Chugh, Lynn Cade, James Dudley, Gaterdog44, Ally Whitchurch, George Pipe, Collin Brumm, Amanda Phillips, George Murray, Daniel Persaud, Jason Bennett, Damon, Dutt Bobba, Gregorio Sanford, Dre Adamenko, rohit chaudhary, Krys Kap, Lukasz Kosturek, Nicholas Smith, Martin Wegner, kaley knowles, SciFiGriffin, Lucas Sanjuan, Jacob Hodges, BRET ANDERSON, Irina Cher, R B, Norway man, Wayne Gosson, and Fireworks for Buddha for supporting us this week. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus.

The OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer) mission has been a resounding success, from taking a sample of asteroid Bennu to returning that sample to Earth. The first in-depth analysis of the space rocks is complete, and the results have been published in Nature and Nature Astronomy. One of the most intriguing results shows that 14 of the 20 amino acids life on Earth uses to form proteins have been found in the sample. This result supports the hypothesis that objects that formed farther from the Sun provided precursor ingredients for life. Join communications specialist Beth Johnson and senior sample scientist Danny Glavin from NASA's Goddard Space Flight Center for a discussion of these important results and their implications for the development of life. (Recorded live on 13 March 2025.)

In this podcast series, we speak with friends of SSPI who recently made big executive moves. We'll find out what they're doing now and what they hope to achieve in their new roles in the industry. In the first episode of season 2, we hear from Kelsey Doerksen, Data Scientist with the Climate and Data Environment Unit at UNICEF and 2021 Promise Award Recipient. Passionate to do impactful work for Earth, in space, Kelsey Doerksen is currently pursuing her PhD at the University of Oxford in the Autonomous Intelligent Machines and Systems Centre for Doctoral Training Program, in the Oxford Applied and Theoretical Machine Learning Group under supervision of Yarin Gal. She is focusing her research on the uses of AI and Machine Learning to enable science discovery and understanding of climate-focused applications (expected graduation, 2025). Kelsey is a Research Affiliate at the NASA Jet Propulsion Lab and a part of the Machine Learning and Instrument Autonomy group, working on the Scientific Understanding from Data Science Strategic Initiative. She is also a Data Scientist with the Climate and Data Environment Unit at UNICEF, building the data pipeline infrastructure and providing analysis necessary to create the UNICEF Children's Climate Risk Index. Kelsey recently completed her Data Science Research Fellow position with UNICEF and European Space Agency F-lab, working on the Giga Initiative to use Earth Observation and AI to map schools in the global south and their access to electricity and the internet. She is a former Space Systems engineer at Planet on the Mission Operations team, using space to help life on Earth, and co-led the commissioning of 48 satellites for the Flock 4S commissioning campaign, publishing the work as part of the SmallSat 2021 conference. Kelsey graduated from the Masters of Engineering Science in Electrical & Computer Engineering in the collaborative Planetary Science and Exploration Program at Western University in December 2019. Her thesis topic involved the utilization of machine learning algorithms for space weather applications, using in-situ satellite data. Kelsey's Bachelors degree was in Aerospace Engineering: Space Systems Design with a Minor in Business at Carleton University, in which she further fostered her passion for one day becoming an astronaut. Spacecraft operations, machine learning, climate change and solar physics are some of her research-focused interests.

Let's take a fast-paced journey thru all that's new in space and astronomy, including DESI takes a census of central blackholes, star formation in clusters, and updates on Europa Clipper, along with a deep dive into Mars science, and tales from the launch pad.

The late Paleozoic ice age began in the Late Devonian and ended in the Late Permian, occurring from 360 to 255 million years ago. It was similar to the present day in two key respects: rising atmospheric CO2 and recurrent major ice sheets. In the podcast, Isabel Montañez explains how we can use proxies to learn about the climate and ocean conditions that prevailed then. And with the help of a model, she says that we can also learn about sensitivities and feedbacks of Earth systems to rising CO2. Among other things, the model suggests that when the atmosphere reaches the present day level of CO2, significant parts of the ocean may become anoxic and ocean circulation patterns alter.Montañez is a Distinguished Professor in the Department of Earth and Planetary Sciences at the University of California, Davis.

In this episode of This Week in Space, Rod Pyle and Tariq Malik talk with Dr. Jim Green, former NASA Chief Scientist. He discusses how we can search for technosignatures that might indicate advanced civilizations in other star systems, new ideas on Mars sample return, and his fascinating experience consulting on the movie, The Martian! Also: this week's robotic landings on the Moon - one successful, one partly so; what's up with the USAF X-37B mini-shuttle; and recent news on those Energizer Bunnies of space, Voyagers 1&2. Their wings have been clipped a bit, but they just keep going... join us! News Lunar Landing Week: Firefly Aerospace's Blue Ghost lander achieved a flawless touchdown in Mare Chrisium, the Intuitive Machines Athena lander reached the Moon's south polar region but experienced issues with its navigation radar (and tipped over), and SpaceX's Starship test flight 8 successfully caught its booster for the third time but lost control of the upper stage, resulting in the breakup of the upper stage and debris over the Bahamas and Caribbean. NASA powered down additional instruments on both Voyager 1 and Voyager 2 to extend their remaining power supply, including Voyager 1's cosmic ray system that helped confirm its entry into interstellar space in 2012. The secretive US Space Force X-37B space plane landed at Vandenberg Space Force Base after 434 days in orbit, completing its seventh mission, which tested new orbital capabilities, including aerobraking techniques. A newly released list showcases the world's top ten locations for dark skies and stargazing, with the US only having only one location—in Hawaii—to make the list. Dr. Jim Green His Career: Dr. Green goes over his former role as NASA's Chief Scientist and highlights key aspects of his career, including running the National Space Science Data Center (NSSDC) and leading NASA's Planetary Science Division, and how his interest in space first began. The Martian: Dr. Green also explains how he got involved as a consultant for Ridley Scott's movie, "The Martian," and how NASA got really involved with the film. He also shares his favorite scene from the movie. NASA's Search for Alien Civilizations: Dr. Green shares how he helped shift NASA's focus from traditional SETI to searching for technosignatures like Dyson Spheres and O'Neill structures in other star systems, securing $10 million in funding for research that could detect megastructures in our astronomical data while noting that humanity may need similar space habitats in 800 million years when the sun makes Earth uninhabitable. Mars Sample Return Strategy: Dr. Green explains how NASA's evolving plan to return samples fropm Mars includes developing Mars Ascent Vehicles that could eventually support human missions while revealing that Perseverance was deliberately designed to place sample tubes on the surface so any nation could retrieve them, making the mission more politically viable with budget offices and Congress. Humanity's Cosmic Future: Dr. Green reveals that he helped create NASA's Commercial Lunar Payload Services (CLPS) program to support new companies for lunar missions. Despite early failures, he emphasized that humanity must utilize space resources and capabilities to ensure our species' long-term survival. Hosts: Rod Pyle and Tariq Malik Guest: Dr. Jim Green Download or subscribe to This Week in Space at https://twit.tv/shows/this-week-in-space. Join Club TWiT for Ad-Free Podcasts! Support what you love and get ad-free shows, a members-only Discord, and behind-the-scenes access. Join today: https://twit.tv/clubtwit

In this episode of This Week in Space, Rod Pyle and Tariq Malik talk with Dr. Jim Green, former NASA Chief Scientist. He discusses how we can search for technosignatures that might indicate advanced civilizations in other star systems, new ideas on Mars sample return, and his fascinating experience consulting on the movie, The Martian! Also: this week's robotic landings on the Moon - one successful, one partly so; what's up with the USAF X-37B mini-shuttle; and recent news on those Energizer Bunnies of space, Voyagers 1&2. Their wings have been clipped a bit, but they just keep going... join us! News Lunar Landing Week: Firefly Aerospace's Blue Ghost lander achieved a flawless touchdown in Mare Chrisium, the Intuitive Machines Athena lander reached the Moon's south polar region but experienced issues with its navigation radar (and tipped over), and SpaceX's Starship test flight 8 successfully caught its booster for the third time but lost control of the upper stage, resulting in the breakup of the upper stage and debris over the Bahamas and Caribbean. NASA powered down additional instruments on both Voyager 1 and Voyager 2 to extend their remaining power supply, including Voyager 1's cosmic ray system that helped confirm its entry into interstellar space in 2012. The secretive US Space Force X-37B space plane landed at Vandenberg Space Force Base after 434 days in orbit, completing its seventh mission, which tested new orbital capabilities, including aerobraking techniques. A newly released list showcases the world's top ten locations for dark skies and stargazing, with the US only having only one location—in Hawaii—to make the list. Dr. Jim Green His Career: Dr. Green goes over his former role as NASA's Chief Scientist and highlights key aspects of his career, including running the National Space Science Data Center (NSSDC) and leading NASA's Planetary Science Division, and how his interest in space first began. The Martian: Dr. Green also explains how he got involved as a consultant for Ridley Scott's movie, "The Martian," and how NASA got really involved with the film. He also shares his favorite scene from the movie. NASA's Search for Alien Civilizations: Dr. Green shares how he helped shift NASA's focus from traditional SETI to searching for technosignatures like Dyson Spheres and O'Neill structures in other star systems, securing $10 million in funding for research that could detect megastructures in our astronomical data while noting that humanity may need similar space habitats in 800 million years when the sun makes Earth uninhabitable. Mars Sample Return Strategy: Dr. Green explains how NASA's evolving plan to return samples fropm Mars includes developing Mars Ascent Vehicles that could eventually support human missions while revealing that Perseverance was deliberately designed to place sample tubes on the surface so any nation could retrieve them, making the mission more politically viable with budget offices and Congress. Humanity's Cosmic Future: Dr. Green reveals that he helped create NASA's Commercial Lunar Payload Services (CLPS) program to support new companies for lunar missions. Despite early failures, he emphasized that humanity must utilize space resources and capabilities to ensure our species' long-term survival. Hosts: Rod Pyle and Tariq Malik Guest: Dr. Jim Green Download or subscribe to This Week in Space at https://twit.tv/shows/this-week-in-space. Join Club TWiT for Ad-Free Podcasts! Support what you love and get ad-free shows, a members-only Discord, and behind-the-scenes access. Join today: https://twit.tv/clubtwit

In this episode of This Week in Space, Rod Pyle and Tariq Malik talk with Dr. Jim Green, former NASA Chief Scientist. He discusses how we can search for technosignatures that might indicate advanced civilizations in other star systems, new ideas on Mars sample return, and his fascinating experience consulting on the movie, The Martian! Also: this week's robotic landings on the Moon - one successful, one partly so; what's up with the USAF X-37B mini-shuttle; and recent news on those Energizer Bunnies of space, Voyagers 1&2. Their wings have been clipped a bit, but they just keep going... join us! News Lunar Landing Week: Firefly Aerospace's Blue Ghost lander achieved a flawless touchdown in Mare Chrisium, the Intuitive Machines Athena lander reached the Moon's south polar region but experienced issues with its navigation radar (and tipped over), and SpaceX's Starship test flight 8 successfully caught its booster for the third time but lost control of the upper stage, resulting in the breakup of the upper stage and debris over the Bahamas and Caribbean. NASA powered down additional instruments on both Voyager 1 and Voyager 2 to extend their remaining power supply, including Voyager 1's cosmic ray system that helped confirm its entry into interstellar space in 2012. The secretive US Space Force X-37B space plane landed at Vandenberg Space Force Base after 434 days in orbit, completing its seventh mission, which tested new orbital capabilities, including aerobraking techniques. A newly released list showcases the world's top ten locations for dark skies and stargazing, with the US only having only one location—in Hawaii—to make the list. Dr. Jim Green His Career: Dr. Green goes over his former role as NASA's Chief Scientist and highlights key aspects of his career, including running the National Space Science Data Center (NSSDC) and leading NASA's Planetary Science Division, and how his interest in space first began. The Martian: Dr. Green also explains how he got involved as a consultant for Ridley Scott's movie, "The Martian," and how NASA got really involved with the film. He also shares his favorite scene from the movie. NASA's Search for Alien Civilizations: Dr. Green shares how he helped shift NASA's focus from traditional SETI to searching for technosignatures like Dyson Spheres and O'Neill structures in other star systems, securing $10 million in funding for research that could detect megastructures in our astronomical data while noting that humanity may need similar space habitats in 800 million years when the sun makes Earth uninhabitable. Mars Sample Return Strategy: Dr. Green explains how NASA's evolving plan to return samples fropm Mars includes developing Mars Ascent Vehicles that could eventually support human missions while revealing that Perseverance was deliberately designed to place sample tubes on the surface so any nation could retrieve them, making the mission more politically viable with budget offices and Congress. Humanity's Cosmic Future: Dr. Green reveals that he helped create NASA's Commercial Lunar Payload Services (CLPS) program to support new companies for lunar missions. Despite early failures, he emphasized that humanity must utilize space resources and capabilities to ensure our species' long-term survival. Hosts: Rod Pyle and Tariq Malik Guest: Dr. Jim Green Download or subscribe to This Week in Space at https://twit.tv/shows/this-week-in-space. Join Club TWiT for Ad-Free Podcasts! Support what you love and get ad-free shows, a members-only Discord, and behind-the-scenes access. Join today: https://twit.tv/clubtwit

In this episode of This Week in Space, Rod Pyle and Tariq Malik talk with Dr. Jim Green, former NASA Chief Scientist. He discusses how we can search for technosignatures that might indicate advanced civilizations in other star systems, new ideas on Mars sample return, and his fascinating experience consulting on the movie, The Martian! Also: this week's robotic landings on the Moon - one successful, one partly so; what's up with the USAF X-37B mini-shuttle; and recent news on those Energizer Bunnies of space, Voyagers 1&2. Their wings have been clipped a bit, but they just keep going... join us! News Lunar Landing Week: Firefly Aerospace's Blue Ghost lander achieved a flawless touchdown in Mare Chrisium, the Intuitive Machines Athena lander reached the Moon's south polar region but experienced issues with its navigation radar (and tipped over), and SpaceX's Starship test flight 8 successfully caught its booster for the third time but lost control of the upper stage, resulting in the breakup of the upper stage and debris over the Bahamas and Caribbean. NASA powered down additional instruments on both Voyager 1 and Voyager 2 to extend their remaining power supply, including Voyager 1's cosmic ray system that helped confirm its entry into interstellar space in 2012. The secretive US Space Force X-37B space plane landed at Vandenberg Space Force Base after 434 days in orbit, completing its seventh mission, which tested new orbital capabilities, including aerobraking techniques. A newly released list showcases the world's top ten locations for dark skies and stargazing, with the US only having only one location—in Hawaii—to make the list. Dr. Jim Green His Career: Dr. Green goes over his former role as NASA's Chief Scientist and highlights key aspects of his career, including running the National Space Science Data Center (NSSDC) and leading NASA's Planetary Science Division, and how his interest in space first began. The Martian: Dr. Green also explains how he got involved as a consultant for Ridley Scott's movie, "The Martian," and how NASA got really involved with the film. He also shares his favorite scene from the movie. NASA's Search for Alien Civilizations: Dr. Green shares how he helped shift NASA's focus from traditional SETI to searching for technosignatures like Dyson Spheres and O'Neill structures in other star systems, securing $10 million in funding for research that could detect megastructures in our astronomical data while noting that humanity may need similar space habitats in 800 million years when the sun makes Earth uninhabitable. Mars Sample Return Strategy: Dr. Green explains how NASA's evolving plan to return samples fropm Mars includes developing Mars Ascent Vehicles that could eventually support human missions while revealing that Perseverance was deliberately designed to place sample tubes on the surface so any nation could retrieve them, making the mission more politically viable with budget offices and Congress. Humanity's Cosmic Future: Dr. Green reveals that he helped create NASA's Commercial Lunar Payload Services (CLPS) program to support new companies for lunar missions. Despite early failures, he emphasized that humanity must utilize space resources and capabilities to ensure our species' long-term survival. Hosts: Rod Pyle and Tariq Malik Guest: Dr. Jim Green Download or subscribe to This Week in Space at https://twit.tv/shows/this-week-in-space. Join Club TWiT for Ad-Free Podcasts! Support what you love and get ad-free shows, a members-only Discord, and behind-the-scenes access. Join today: https://twit.tv/clubtwit

2/4: #NEO: JWST SIGHTING OF DECAMETRE MAIN BELT ASTEROIDS AND VIEW METEORITE SOURCES. JULIAN DE WITT, ARTEM BURDANOV, RICHARD BINZEL, MIT PLANETARY SCIENCE. https://www.nature.com/articles/s41586-024-08480-z1962

4/4: #NEO: JWST SIGHTING OF DECAMETRE MAIN BELT ASTEROIDS AND VIEW METEORITE SOURCES. JULIAN DE WITT, ARTEM BURDANOV, RICHARD BINZEL, MIT PLANETARY SCIENCE. https://www.nature.com/articles/s41586-024-08480-z 1958

3/4: #NEO: JWST SIGHTING OF DECAMETRE MAIN BELT ASTEROIDS AND VIEW METEORITE SOURCES. JULIAN DE WITT, ARTEM BURDANOV, RICHARD BINZEL, MIT PLANETARY SCIENCE.  https://www.nature.com/articles/s41586-024-08480-z 1958

1/4: #NEO: JWST SIGHTING OF DECAMETRE MAIN BELT ASTEROIDS AND VIEW METEORITE SOURCES. JULIAN DE WITT, ARTEM BURDANOV, RICHARD BINZEL, MIT PLANETARY SCIENCE. 1958

This is a conversation with Naomi Oreskes, Professor of History of Science and Affiliated Professor of Earth and Planetary Sciences at Harvard University.Originally trained as a geologist, she became a historian of science, and has particularly focused on how certain ideas become established in public debate despite their lack of scientific foundation. She became widely known to the public with her book "Merchants of Doubt," published in 2010.In her latest work "The Big Myth," co-written with Erik Conway, she dissects the origins and construction of what she calls "market fundamentalism" - this quasi-religious belief in the market's ability to solve all societal problems.How has this ideology become so entrenched that it has become a major obstacle in addressing environmental challenges? Why does it continue to exert such influence despite growing evidence of its limitations, especially in the face of the climate crisis?We discuss these questions and many others in this insightful conversation that invites us to reflect on how certain ideas, even when refuted by facts, can continue to shape our societies and our responses to major contemporary challenges.Interview recorded on 05/12/2024Credit photo: Kayana Szymczak---Retrouvez tous les épisodes et les résumés sur www.sismique.frSismique est un podcast indépendant créé et animé par Julien Devaureix.

Asteroid 2024 YR4 has been identified as the most concerning near-Earth object currently being tracked. NASA initially estimated a 3.1% chance of 2024 YR4 impacting Earth in December 2032, while the ESA put it at 2.8%, surpassing Apophis' 2.7% risk in 2004. However, further observations have lowered NASA's estimate to 1.5%, highlighting the refinement of risk assessments over time. But how are these risks assessed? Why do the odds keep fluctuating? Let's find out! Guest: Richard Binzel - Professor of Planetary Sciences at MIT and Inventor of the Torino Scale Learn more about your ad choices. Visit megaphone.fm/adchoices

Let's take a fast-paced journey thru all that's new in space and astronomy, including a potentially killer asteroid, a new look at the history of Earth's water, and a mini-quasi-moon, along with a deep dive into climate change, and tales from the launch pad.

In 1965, a meteorite fell near Revelstoke, B.C., and was discovered by beaver trappers. Scientists studied its fragments, which provided clues about the early solar system. Decades later, NASA's OSIRIS-REx mission brought back samples from the asteroid Bennu, a space rock similar to the Revelstoke meteorite, to learn more about the origins of life on Earth. Guest: Sara Russell - Professor of Planetary Sciences at the Natural History Museum Learn more about your ad choices. Visit megaphone.fm/adchoices

Guest | Dr. Will Grundy, Astronomer, Lowell ObservatoryHost | Matthew S WilliamsOn ITSPmagazine  

Guest | Dr. Will Grundy, Astronomer, Lowell ObservatoryHost | Matthew S WilliamsOn ITSPmagazine  

New research using the Atacama Large Millimeter/submillimeter Array (ALMA) telescope reveals that planet formation can occur in harsh, high-radiation stellar environments. This contradicts earlier assumptions and suggests planet formation is more resilient than previously thought. The study observed protoplanetary disks within the Sigma Orionis cluster, finding structures indicating potential planet formation despite intense ultraviolet radiation from a nearby star. These findings expand our understanding of planetary formation and its prevalence throughout the galaxy, informing studies of our own solar system's origins. The high-resolution images obtained by ALMA were crucial to these discoveries. Join communications specialist Beth Johnson for an interview with lead author Dr. Jane Huang about this new research, its impact on understanding our solar system, and how it relates to the search for habitable worlds. (Recorded 23 January 2025.)

It's the kind of week where we feel the need to put joy into the world, and we've made the decision to just find stories to bring a smile and share them with you. And also rockets, we're bringing you all the rocket news.

"Physics-based methods honor our understanding of the subsurface, while machine learning fills the gaps - but combining them is key." Andrew Geary chats with Mrinal Sen, a pioneer in seismic data analysis, about his Distinguished Instructor Short Course (DISC) and forthcoming book, Physics and Data Driven Seismic Data Analysis: A Narrative of Two Approaches. Mrinal shares how blending physics-based methods with machine learning unlocks new possibilities in seismic interpretation. Whether you're a student, geophysicist, or industry leader, this discussion is packed with insights into navigating the evolving landscape of seismic analysis. KEY TAKEAWAYS > The Power of Combining Approaches: Learn how integrating physics-driven and data-driven methods enhances seismic problem-solving. > Applications in Seismic Analysis: Discover real-world uses of machine learning, from denoising seismic data to improving full-waveform inversion. > A Practical Guide for Decision-Makers: Gain tools to decide when and how to leverage machine learning versus traditional physics-based techniques. NEXT STEP Ready to explore the future of seismic analysis? Enroll in Mrinal Sen's course to deepen your understanding and stay ahead at https://seg.org/education/courses/mrinal-sen-disc/. TEXT A FRIEND This episode explains when to choose physics vs. machine learning for seismic problems - so useful for decision-making! https://seg.org/podcasts/episode-246-combining-tradition-and-innovation-in-seismic-problem-solving/ GUEST BIO Mrinal K. Sen is a professor of Geophysics and holder of the Morgan Davis Centennial chair in Petroleum Geology at the Department of Earth and Planetary Sciences and the Institute for Geophysics at the University of Texas at Austin. During 2013 and 2014, Mrinal was the director of the National Geophysical Research Institute, Hyderabad, India. He received his M.Sc degree from IIT Dhanbad and PhD from the University of Hawaii at Manoa, USA. LINKS * Visit https://seg.org/podcasts/episode-246-combining-tradition-and-innovation-in-seismic-problem-solving/ for Mrinal's full biography and the complete show notes. JOIN THE SEG COMMUNITY Studying geosciences? The Society of Exploration Geophysicists is your key to success. * Boost your career: Access mentorship, scholarships, and discounted conferences. * Expand your knowledge: Explore the SEG Library – a treasure trove of articles, books, and papers on the latest advancements. * Connect globally: Network with geoscientists worldwide, discuss and collaborate on projects. * Enhance your skills: Benefit from various continuing education programs. * Unlock your potential: Join SEG and elevate your geoscience journey. Learn more about membership benefits at https://seg.org/membership/. CALL FOR ABSTRACTS Technical Program Chairs Yingcai Zheng and Molly Turko invite you to submit your best work. This year, we're fostering deeper collaboration between SEG, AAPG, and SEPM. Focus on regional challenges and how integrated geoscience can unlock solutions. Submit short or expanded abstracts for oral and poster presentations. The Call for Abstracts is open and closes on 15 March at 5:00 PM CT. Don't miss this opportunity to share your research and connect with the broader geoscience community at https://www.imageevent.org/call-for-abstracts. SHOW CREDITS Andrew Geary at TreasureMint hosted, edited, and produced this episode. The SEG podcast team comprises Jennifer Cobb, Kathy Gamble, and Ally McGinnis. If you have episode ideas or feedback for the show or want to sponsor a future episode, email the show at podcast@seg.org.

Happy New Year from all of us here at Cleaning Up. This week we're bringing you one from our archive of almost 200 episodes. It's a conversation Bryony Worthington had with Naomi Oreskes in October 2023,  her very first episode as a co-host for Cleaning Up.  Naomi Oreskes is the Henry Charles Lea Professor of the History of Science and Affiliated Professor of Earth and Planetary Sciences at Harvard University. A world-renowned earth scientist, historian and public speaker, she is the author of the best-selling book, Merchants of Doubt, and a leading voice on the role of science in society and the role of disinformation in blocking climate action, a topic that feels more relevant than ever. Please enjoy, and we'll be back with Season 14 of Cleaning Up on January 8th.

Let's take a fast-paced journey thru new discoveries planetary science and Cosmology. We look at Dark Comets, Io's gooey mantle, the colonization of a Ryugu sample by Earth bacteria, galaxies growing too fast too early, and more. As always, we'll also bring you tales from the launch pad.

Host | Matthew S WilliamsOn ITSPmagazine  

Could life hitchhike across planets? What color is the sky on Mars? Neil deGrasse Tyson and Bill Nye, the current CEO of The Planetary Society, team up to discuss the science and advocacy that goes into space exploration, unraveling the threads of discovery that define humanity's quest to understand the cosmos.NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free here:https://startalkmedia.com/show/journey-to-the-stars-with-bill-nye/Thanks to our friends at The Planetary Society for partnering with us on this episode! To support their mission and the future of space advocacy, head over to https://Planetary.org/StarTalkThanks to our Patrons Edwin Strode, Mathew M, Micheal McDonough, Evan Fenwick, Trvis Knop, David Hardison, Sarah Kominek, Saulius Alminas, Rob Lentini, Eric Williams, Billy, John Buzzotta, Jeremy Hopcroft, Christian Harvey, Bob Cobourn, Jeremy ALford, Brandon Cortazar, James Finlay, Anastine2020, Rebecca Valenti, jordan battleson, Timothy Jarvis, and Gleb Mpakopuc for supporting us this week. Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to new episodes ad-free and a whole week early.

There exists a staggering amount of misinformation and disinformation surrounding climate change, clouding our understanding of its causes and potential solutions. Naomi Oreskes, renowned earth scientist, historian and public speaker, is able to shatter the misconceptions and uncover the fundamental truth of the matter. She is the Henry Charles Lea Professor of the History of Science and Affiliated Professor of Earth and Planetary Sciences at Harvard University. She is also the co-author, with Erik M. Conway, of “Merchants of Doubt: How a Handful of Scientists Obscured the Truth on Issues from Tobacco Smoke to Global Warming,” and most recently, “The Big Myth: How American Business Taught Us to Loathe Government and Love the Free Market.” Naomi Oreskes speaks with host Alec Baldwin about the fossil fuel industry's propaganda campaign against climate action, the myths surrounding green jobs and the economy, and who bears the responsibility to fix this critical issue. See omnystudio.com/listener for privacy information.

Will alien life look like anything on Earth? Neil deGrasse Tyson and comedian Chuck Nice deep dive into questions about astrobiology, revisiting the Drake Equation, and life beyond Earth with NASA astrobiology strategist, David Grinspoon a.k.a Dr. Funkyspoon.NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free here: https://startalkmedia.com/show/revisiting-the-drake-equation-with-david-grinspoon/Thanks to our Patrons Edvardo Cullen, Harriet Harmon, Andre Rivera Hinostroza, David Rolfe, Piotr Toruński, Karen Mills, Ghost Rider, Leonard Leonidas, Beatriz Clemente, Jon Johnson, Loren Blaine, John Bigelow, and Leslie Colonello for supporting us this week. Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to new episodes ad-free and a whole week early.