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Part 2: The Blueprint for a High-Performance Grow RoomWelcome to Part 2 of our conversation with Nadia Sabeh, PhD, PE, aka Dr. Greenhouse.In The Blueprint for a High-Performance Grow Room, Mark Doherty picks up where Part 1 : Lights vs. HVAC: The Invisible War Happening Inside Your Canopy left off, focusing on what it truly takes to design a sustainable, high-performance cultivation facility in today's evolving market.They explore why cannabis still lacks a replicable “gold standard” grow room, how over-engineering can quietly drain budgets, and why long-term success depends more on managing costs than chasing higher yields. The conversation introduces a “less is more” economic strategy—arguing that survival in a maturing market depends on reducing costs and optimizing energy use, not just pushing for higher yields or 30%+ THC results. They also dive into designing within real-world constraints—retrofitted spaces, non-standard warehouses—and the importance of integrating lighting, HVAC, irrigation, and controls into one cohesive system rather than isolated parts.This episode is a practical reality check: high-performance grow rooms aren't built on hype or “magic” solutions—but on data, integration, and intentional design.About Nadia Sabeh, aka Dr. GreenhouseDr. Nadia Sabeh works with indoor and greenhouse growers to create the best possible environment for their crop. In 2017, she founded Dr. Greenhouse, Inc., an engineering firm that specializes in the design and operation of HVAC systems that maximize yield and quality, while minimizing costs. She and her team have worked on over 200 controlled environment agriculture (CEA) projects around the world. Her blog and podcast, "The Doctor Is In,” is geared toward growers who seek to advance their knowledge in CEA, climate management, and CEA crop production. She speaks regularly at conferences and events and has authored or interviewed for over 50 articles. Dr. Sabeh discovered CEA as an undergraduate working on a commercial mushroom farm, has a PhD in Agricultural Engineering, and is a licensed Mechanical Engineer in several states.If you'd like to learn more about Dr. Greenhouse, visit them at: www.DoctorGreenhouse.com.About Mark Doherty, Doherty AgMark Doherty is the Vice President of Construction and Facilities Management for Grown Rogue, bringing over 15 years of experience in controlled environment agriculture and commercial cannabis cultivation. Throughout his career, he has led operations and facility development across multiple national brands, including roles as COO at Dual Draft Integrated Airflow, Executive VP at urban-gro, and VP of Facilities Management at Vireo Growth.Through his firm Doherty Agriculture, Mark focuses on turning around underperforming cultivation assets using his signature People, Plants, Profits framework—treating each facility as a living, breathing machine to drive efficiency, consistency, and profitability. He is known for combining deep technical expertise with practical leadership to elevate both the people and the plants behind successful cultivation operations.If you'd like to connect with Mark, please email him at mark.edward.doherty@gmail.com.About TSRgrowTSRgrow's advanced cultivation technology helps growers improve efficiency, consistency, and crop performance. From high-performance LED lighting to remote power and monitoring solutions, TSRgrow provides scalable tools designed to support modern cultivation operations at every stage of the grow. To learn more about TSRgrow, visit www.TSRgrow.com.Thanks for listening. Be sure to subscribe to our podcast to receive upcoming episodes.
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Joyce from Kansas (09/09), Debbie from Oklahoma (08/26) and Roberta from Michigan (09/02).
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Patrick from Washington DC (08/12), Shelly from Washington (08/26) and Rose from New York (07/30).
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Donna from Pennsylvania (08/06), Janet from Ohio (07/30) and Michael from Washington (08/05).
In Part 1 of this episode, Mark Doherty sits down with Nadia Sabeh, aka Doctor Greenhouse, to expose the hidden conflict between high-intensity lighting and the HVAC systems responsible for maintaining balance in controlled environments.Together, they discuss:The Three-Legged Stool of CEA and why lighting, HVAC, and plant biology must be designed as one integrated systemHow increasing photon density drives heat load, humidity, and energy demandThe risks behind the rise of under-canopy lighting and the unintended consequences of chasing more photonsWhy optimizing one system in isolation often leads to higher costs and diminishing returnsThis episode reveals the invisible forces shaping canopy performance, and why many grow rooms fail long before the first plant goes in.
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Marilyn from New Jersey (07/29) and Mike from Texas (07/24).
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Carl from Michigan (05/01) and Laura from Indiana (05/01).
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Susan from Michigan (07/22), Michelle from Indiana (07/29) and Jackie from Kansas (07/24).
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Maureen from New York (07/17), Carl from Missouri (07/23) and Julie (07/23).
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Ed from Michigan (03/13), Molly from the Midwest (03/18) and Jimmy from Pennsylvania (02/18). (Originally aired July 11, 2025)
Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Mary from Ohio (8/13), Mike from Florida (11/12) and Gina from Missouri (8/13).
Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Kirk from North Dakota (7/16), Gail from North Dakota (7/16) and Bianca from California (7/17).
Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Judy from New York (02/06), Sheila from Indiana (02/11) and Laura from Indiana. (Originally aired June 13, 2025)
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Anonymous female from New York (7/10), Annie from Nebraska (7/10) and Cathy from Michigan (7/15).
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Kay from Illinois (07/01), Colton from Washington (07/08) and Steven (07/08).
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Teresa from Pennsylvania (07/02), Diane from Florida (07/02) and Karen from Florida (07/02).
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Tony from Indiana (06/26), Randall (6/18) and Barb (07/01).
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Diana from California (06/26), Anonymous female from South Carolina (06/25) and Pam from Ohio (06/26).
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Kathy from Pennsylvania (06/25), Daisy from Minnesota (06/16) and Josie from Virginia (06/17).
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Shareen from Illinois (06/17) and Rose from Missouri (06/10).
From Lessons From the Climate Anxiety Counseling Booth “In 2014, when Kate Schapira first set up a Climate Anxiety Counseling booth in her hometown of Providence, Rhode Island, far fewer people were talking about climate change and its attendant anxiety, leaving those who couldn't ignore climate change and the forces that cause it feeling frantic and alone. Seeking a way to reach out and connect, Schapira set up a Peanuts-style "The Doctor Is In" booth to talk about climate change with her community. Ten years and over 1200 conversations later, Schapira channels all she's learned into an accessible, understandable, and aware guide for processing climate anxiety and connecting with others to carry out real change in your life and in your community.” Join Kate in discussion with Panu and Thomas, and learn how you too can create safe spaces to talk, feel and dream about how we can master and move through the climate crisis.
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Tammy from Ohio (06/10), Anonymous male from Ohio (05/30) and Monica from Ohio (06/10).
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Kara from Massachusetts (5/20), Bishop from Montana (6/9) and Heather from Oklahoma (6/9).
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Deena from Oregon (05/22), Andy from Missouri (04/01) and John from Florida (05/21).
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Matthew from Alaska (05/20) and Catherine (04/30).
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Ann (04/29) and Fr. Deacon from Michigan (05/14).
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Ann (04/29) and Fr. Deacon from Michigan (05/14).
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Jeff from Ohio (04/15), Lily from Texas (05/01) and Mike from New York (04/10).
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Jeff from Ohio (04/15), Lily from Texas (05/01) and Mike from New York (04/10).
"The Doctor Is In"Luke 5:27-39Rev. Craig Luekens8.17.25visit cpcnewhaven.org
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Dave from Texas (10/30), Anonymous female from New York (12/5) and Meg from Texas (12/11). (Originally aired April 11, 2025)
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Dave from Texas (10/30), Anonymous female from New York (12/5) and Meg from Texas (12/11). (Originally aired April 11, 2025)
The Doctor Is In - 2025-08-06 - The Doctor is In Wednesday by EWTN Radio
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Carl from Michigan (05/01) and Laura from Indiana (05/01).
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Carl from Michigan (05/01) and Laura from Indiana (05/01).
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Monica from Nebraska (03/20), Andrea from Texas (04/03) and Anonymous male from South Carolina (04/01).
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Monica from Nebraska (03/20), Andrea from Texas (04/03) and Anonymous male from South Carolina (04/01).
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Barry from Virginia (03/25), Derek from Maryland (03/20) and Anonymous male from South Carolina (04/01).
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Barry from Virginia (03/25), Derek from Maryland (03/20) and Anonymous male from South Carolina (04/01).
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Kat from Florida (03/18), Rita from Ohio (03/20) and Linda from Ohio (03/04).
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Kat from Florida (03/18), Rita from Ohio (03/20) and Linda from Ohio (03/04).
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Ed from Michigan (03/13), Molly from the Midwest (03/18) and Jimmy from Pennsylvania (02/18).
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Ed from Michigan (03/13), Molly from the Midwest (03/18) and Jimmy from Pennsylvania (02/18).
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Teresa from Ohio (03/04), Gabriel from Missouri (03/04) and Carol from Virginia (03/04).
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Anonymous female from Pennsylvania (02/12), Vanessa from Texas and Eric from Idaho (02/19).
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Judy from New York (02/06), Sheila from Indiana (02/11) and Laura from Indiana.
The Doctor IS IN! Another POWERFUL & INFORMATIVE episode with the LEGEND Dr. Mark Gordon! tbihelpnow.org/about https://millenniumhealthstore.com/ "A Path Less Traveled" Article- https://agemed.org/e-journal/feature-article-march-2025-a-path-less-traveled-how-alternative-medicine-became-mainstream-in-american-healthcare/ Dr. Gordon's YT Channel. https://youtube.com/@markl.gordon5856?si=LMfBv7_e-br17mzT
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Teresa from Pennsylvania (02/05), Anna from Wisconsin (02/05) and Rose from Missouri (02/04).
It's Look Back Friday! Instead of taking calls, Dr. Ray spends Friday's revisiting previously aired conversations from “The Doctor Is In” in order to expand on his answers and the topics addressed. On today's show, we look back on Anonymous female from Texas (01/21), Joe from New York (01/23) and Janet from North Carolina (01/21).
Joel Bervell was one of the only Black students in his medical school program. After noticing how misconceptions about race were embedded in health care, he turned to social media to raise awareness about the harmful impact of biases in medicine. He unpacks the long history of race-based health care disparities — and shows what the medical field can do to better serve all patients. After the talk, Joel and Shoshana talk about the role AI and tech play in perpetuating biases and Joel's forthcoming animated children tv show, The Doctor Is In. Hosted on Acast. See acast.com/privacy for more information.