The Science Show - Separate stories podcast

With an estimated 200 million feral rabbits hopping around Australia, are current viral controls working, and do we need another virus to knock off these invasive pests?

Australia was once home to kangaroos that weighed as much as a quarter of a tonne. A new fossil analysis suggests these hefty creatures could hop - but only if they really needed to.

An almost-complete skeleton of an ancient hominin was found in a South African cave in the 1990s. Nearly 30 years later, questions remain about the individual's species.

You may have heard the story about elephants being scared of mice, but what about bees? Farmers and scientists in Africa are taking advantage of this fear to protect crops.

A quick online search reveals multiple paid services for naming stars as commemorative gifts. You'll be provided with a certificate and a map for finding your star in the sky. But these names are not official and are not used by astronomers — or anyone else, for that matter. So what's going on, and how do stars really get their names?  ‌Featuring:  Laura Driessen, radio astronomer at the University of Sydney You can binge more episodes of the Lab Notes podcast with science editor and presenter Jonathan Webb on the ABC Listen app (Australia). You'll find episodes on animal behaviour, human health, space exploration and so much more.Get in touch with us: labnotes@abc.net.auThis episode of Lab Notes was produced on the lands of the Gadigal and Menang Noongar people.

Director Simon Duffy describes the wide range of activities at Sydney's Royal Botanic Gardens.

Philippa Collin describes the themes which have emerged from Australia's biggest writing competition for young people. 

Cleaner air as ships' have reduced their emissions has exacerbated coral bleaching in the Great Barrier Reef.

Wherever Homo sapiens has roamed, other human species tend to disappear, and a cave on the Indonesian island of Sulawesi is no exception.

Retinoids are big business for reducing wrinkles and treating acne — but there's conflicting advice on their safety for pregnant women.Should manufacturers of these skincare products be providing warnings? Or are the risks not that great?You can binge more episodes of the Lab Notes podcast with science editor and presenter Jonathan Webb on the ABC Listen app (Australia). You'll find episodes on animal behaviour, human health, space exploration and so much more.Get in touch with us: labnotes@abc.net.auFeaturing:Caitlyn Davey, health reporterExtra information:Retinoids are booming in the beauty industry, but are they safe to use during pregnancy?This episode of Lab Notes was produced on the lands of the Gadigal and Menang Noongar people.

Australia's social media ban for under 16s aims to protect young people from online threats, but it may also limit their knowledge about democracy and political systems.

Small patches of forests in schools initiate discussion and leaning across biology and ecology. Students develop a sense of ownership and community awareness with improved mental health. A Perth-based initiative is spreading far and wide. 

The massive foundations that support offshore wind turbines can be an oasis for marine life in an otherwise submarine desert, according to work done at Murdoch University in Australia and Dalian Ocean University in China.

John Juriansz describes what is revealed from the largest creative writing competition for young people in Australia.

AI seems to be absolutely everywhere at the moment. While we're still waiting for the productivity revolution — or the jobs apocalypse — the energy costs of AI are already staggering.So how should we think about those environmental impacts of AI? And what can we learn from previous turns of the great technological wheel?You can binge more episodes of the Lab Notes podcast with science editor and presenter Jonathan Webb on the ABC Listen app (Australia). You'll find episodes on animal behaviour, human health, space exploration and so much more.Get in touch with us: labnotes@abc.net.auFeaturing: Dr Niraj Lal, renewables expert at the Australian National University Extra information: Data centres are vital for the future and AI but their environmental footprint can be a problemThis episode of Lab Notes was produced on the lands of the Gadigal and Menang Noongar people.

Samples of asteroids contain a range of organic molecules. Do asteroids raining down on Earth explain how life started on Earth?

Only six years ago there were doubts about electric vehicles: range! charging facilities! cost!  Now in 2026, the mood is reversed. Peter Hadfield reports from the Sydney EV auto show.

Peter Newman says fossil fuels industries face long term risk as renewables offer cheaper options. And urban density is increasing around public transport.

Humpback whales narrowly survived being hunted to extinction in the era of industrial whaling, but while their recovery has been strong, they are left with low genetic diversity which may affect their resilience in a changing climate.

Len Fisher gathered Nobel laureates, leaders in science, philosophers and economists to brainstorm serendipity in science, asking how it might be exploited for even more gain. 

Fire, insects and disease all pose a threat to Australia's forests but scientists are now seeing a rise in natural tree deaths right across the country. New research links this background mortality to higher average temperatures.So what do these higher temperatures mean for our forests and the future of Australia's ecosystems? You can binge more episodes of the Lab Notes podcast with science editor and presenter Jonathan Webb on the ABC Listen app (Australia). You'll find episodes on animal behaviour, human health, space exploration and so much more.Get in touch with us: labnotes@abc.net.auFeaturing: Professor Belinda Medlyn, plant ecologist from Western Sydney UniversityExtra information: Pervasive increase in tree mortality across the Australian continentRising tree death rates in all types of Australian forest tied to climate changeThis episode of Lab Notes was produced on the lands of the Gadigal and Menang Noongar people.

It pulses every 18 minutes. What could it be?  A white dwarf? A neutron star? It had been missed in over 30 years of images. Natasha Hurley-Walker describes some of the possibilities.

Small patches of forests in schools initiate discussion and leaning across biology and ecology. Students develop a sense of ownership and community awareness with improved mental health.

Vice-Chancellor Harlene Hayne describes how science is a pilar at Curtin University in Perth. 

Exactly when people first set foot in Australia has sparked fierce debate, with two times currently cited: Around 50,000 years ago, and 65,000 years ago. Which is correct?

Leading marine scientist and university educator Emma Johnston has died from complications associated with cancer at the age of 52.

Peter Newman outlines how cities can achieve net zero and sustainability agendas together as part of the global shift to a new economy.

A faint orange hand stencil on the wall of a cave in Indonesia just became the oldest art known to science.   The art, made by splattering ochre over a hand, had been painted over by subsequent generations and was only preserved because moisture combined with the limestone of the cave to form a protective layer on top. The finding strengthens the picture that humans migrated via Borneo, Sulawesi and Papua to reach Australia at least 65,000 years ago. You can binge more episodes of the Lab Notes podcast with science editor and presenter Jonathan Webb on the ABC Listen app (Australia). You'll find episodes on animal behaviour, human health, space exploration and so much more.Get in touch with us: labnotes@abc.net.auFeaturing: Jacinta Bowler, ABC science reporter Extra information: Hand stencils discovered in an Indonesian cave are oldest-known rock artRock art from at least 67,800 years ago in SulawesiThis episode of Lab Notes was produced on the lands of the Gadigal and Menang Noongar people.

Australia's summer UV levels are high enough to cause sunburn in as little as 11 minutes.Yet the summer sun in the Northern Hemisphere rarely feels that full on.So why does our sunlight have that extra "bite"?Spoiler: it's not the hole in the ozone layer.You can binge more episodes of the Lab Notes podcast with science journalist and presenter Belinda Smith on the ABC Listen app (Australia). You'll find episodes on animal behaviour, human health, space exploration and so much more.Get in touch with us: labnotes@abc.net.auFeaturing: David Whiteman, medical epidemiologist and Cancer Control group leader at QIMR BerghoferMore information:Why is UV so high during Australia's summer? The ozone hole is not to blameCancer Council — UV RadiationWorld Health Organization — Radiation: The ultraviolet (UV) indexCSIRO — The future of the ozone holeThis episode of Lab Notes was produced on the lands of the Wurundjeri and Menang Noongar people.

The next time you pick up a bag of spuds from the supermarket or fill up the car with petrol, you can thank the Treaty of the Metre for the metric system that underpins daily life. The treaty was signed exactly 150 years ago, when delegates from 17 countries gathered in Paris to establish a new and standardised way of measuring the world around us. But the metre's inception predates the treaty that bears its name by nearly 100 years. So how did it come about, and how has its definition changed over the centuries? This episode was first broadcast in May 2025. You can binge more episodes of the Lab Notes podcast with science journalist and presenter Belinda Smith on the ABC Listen app (Australia). You'll find episodes on animal behaviour, human health, space exploration and so much more. Get in touch with us: labnotes@abc.net.auFeaturing:Bruce Warrington, CEO and chief metrologist of the National Measurement Institute More information:The metre originated in the French Revolution, but its definition has changed many times sinceThis episode of Lab Notes was produced on the lands of the Wurundjeri and Menang Noongar people.

Every now and again, dozens or even hundreds of perfectly healthy looking whales strand themselves on a beach. And despite people's best efforts, many — if not all of them — will die. So why do whales strand themselves, and why do they seem to do it at the same locations? This episode was first broadcast in August 2025. You can binge more episodes of the Lab Notes podcast with science journalist and presenter Belinda Smith on the ABC Listen app (Australia). You'll find episodes on animal behaviour, human health, space exploration and so much more. Get in touch with us: labnotes@abc.net.auFeaturing:Kate Sprogis, marine mammal ecologist at University of Western Australia More information: Cause of mass pilot whale stranding at Cheynes Beach still no clearer one year onThis episode of Lab Notes was produced on the lands of the Wurundjeri and Menang Noongar people.

It's impossible to escape microplastics. They're in our food and water, and the air around us is teeming with them. So considering they're all around us, how can we minimise our exposure to tiny plastic fragments without resorting to living in a cave? This episode was first broadcast in August 2025. You can binge more episodes of the Lab Notes podcast with science journalist and presenter Belinda Smith on the ABC Listen app (Australia). You'll find episodes on animal behaviour, human health, space exploration and so much more. Get in touch with us: labnotes@abc.net.auFeaturing:Cassandra Rauert, microplastics researcher at the University of Queensland More information:Microplastics are in our food, water and air. How can we minimise our exposure to them?Human exposure to PM10 microplastics in indoor airAverage household dishwasher releases 33 million nano and microplastic particles per year, research findsLaundry is a top source of microplastic pollution — but you can clean your clothes more sustainablyThis episode of Lab Notes was produced on the lands of the Wurundjeri and Menang Noongar people.

Rina Fu's research and teaching is across three universities. She is a recent recipient of awards including the Western Australia's Premier's Award for Science Communication.

Australia's known for having some of the world's toughest sunscreen standards, but in June, that reputation was rocked.Independent testing of 20 sunscreens found 16 did not meet their advertised SPF50 rating, including three children's sunscreens and three sold by the Cancer Council.So how are sunscreens tested, and what can we learn from these recent SPF revelations?This episode was first broadcast in September 2025.You can binge more episodes of the Lab Notes podcast with science journalist and presenter Belinda Smith on the ABC Listen app (Australia). You'll find episodes on animal behaviour, human health, space exploration and so much more. Get in touch with us: labnotes@abc.net.auFeaturing:John Staton, scientific director at SciPharmMore information:What is SPF, and how is sunscreen's sun protection factor tested in the laboratory?Choice report finds popular Australian sunscreens fail to meet SPF claims on labelThis episode of Lab Notes was produced on the lands of the Wurundjeri and Menang Noongar people.

A huge cold blob of air above Antarctica and bushfires spreading along ridgelines don't appear to have anything in common, yet the strange behaviour of these natural phenomena — and many others — can be understood and explained by mathematics. You can binge more episodes of the Lab Notes podcast with science journalist and presenter Belinda Smith on the ABC Listen app (Australia). You'll find episodes on animal behaviour, human health, space exploration and so much more.Get in touch with us: labnotes@abc.net.auFeaturing:Chantelle Blachut, mathematician at UNSW Canberra

Elizabeth Finkel deploys scientific evidence to show that President Trump's claim that Tylenol, used by pregnant women to relieve pain, is a cause of autism, is false.

Next week we celebrate the English author of fantasy novels Terry Pratchett who died in 2015. Physicist Len Fisher presents this tribute and says the scientific references and thinking in Pratchett's novels are too often overlooked.

Chantelle Doyle moves pollen between locations hoping to establish new plant populations and increase genetic diversity giving struggling species a boost.

Robert Harcourt collects oceanographic information using microcomputers strapped to turtles and seals. 

Jim Falk from Melbourne presented a message of hope at the COP30 climate meeting in Brazil

Step into the supermarket and there's plastic around just about everything, even mangoes — and not all that packaging will be properly disposed of.So with around 20 million tonnes of plastic polluting the environment each year, not to mention the potential health effects of microplastics, is there a better, more environmentally friendly alternative?You can binge more episodes of the Lab Notes podcast with science journalist and presenter Belinda Smith on the ABC Listen app (Australia). You'll find episodes on animal behaviour, human health, space exploration and so much more.Get in touch with us: labnotes@abc.net.auFeaturing:Edward Attenborough, chemical engineer and chemist at Monash UniversityMore information:Bacterial species-structure-property relationships of polyhydroxyalkanoate biopolymers produced on simple sugars for thin film applicationsThis episode of Lab Notes was produced on the lands of the Wurundjeri and Taungurung people.

Space is integral to our modern world, supporting mapping, land care, agriculture, mining, fire prevention and so much more.