Share

cover art for How the Australian wildfires devastated the ozone layer

Nature Podcast

How the Australian wildfires devastated the ozone layer

00:47 Wildfire smoke’s chemical composition enhances ozone depletion

Smoke from the devastating Australian wildfires of 2019-2020 led to a reduction in ozone levels in the upper atmosphere, but it’s been unclear how. Now, a team proposes that smoke’s particulate matter can enhance the production of ozone depleting chemicals, matching satellite observations during the Australian fires. The results spark concerns that future wildfires, which are set to grow more frequent with ongoing climate change, will undo much of the progress towards restoration of the ozone layer.


Research article: Solomon et al.

News & Views: How wildfires deplete ozone in the stratosphere


08:27 Research Highlights

A global analysis of bats reveals the species most likely to be hunted by humans, and the stem cells that allow deer antlers to regrow.


Research Highlight: Big bats fly towards extinction with hunters in pursuit

Research Highlight: Mice grow ‘mini-antlers’ thanks to deers’ speedy stem cells


10:53 Modelling food systems with ‘digital twins’

Recent global crises have highlighted the fragility of the interconnected systems involved in getting food from farm to fork. However, siloed datasets have made it hard to predict what the exact impacts of these events will be. In a World View for Nature, researcher Zia Mehrabi argues that precise virtual models like those used in the aerospace industry should be developed for food systems. These so-called ‘digital twins’ could inform global food policy before emergencies unfold.


World View: Sims-style ‘digital twin’ models can tell us if food systems will weather crises


18:17 Briefing Chat

We discuss some highlights from the Nature Briefing. This time, what the stray dogs of Chernobyl could reveal about the effects of chronic radiation exposure, and the debate surrounding the fate of Pablo Escobar’s ‘cocaine hippos’.


News: What Chernobyl’s stray dogs could teach us about radiation

News: Pablo Escobar’s ‘cocaine hippos’ spark conservation row


Subscribe to Nature Briefing, an unmissable daily round-up of science news, opinion and analysis free in your inbox every weekday.

More episodes

View all episodes

  • How your brain chemistry rewards hard work

    24:02|
    In this episode:00:46 Why completing difficult tasks feels rewardingNature: Touponse et al.11:34 Research HighlightsNature: Disappearing ‘planet’ reveals a solar system’s turbulent timesNature: Getting to the (square) root of stock-market swings13:43 How extreme weather events could threaten malaria elimination effortsNature: Symons et al.Subscribe to Nature Briefing, an unmissable daily round-up of science news, opinion and analysis free in your inbox every weekday.
  • Audio long read: ‘I rarely get outside’ — scientists ditch fieldwork in the age of AI

    18:29|
    This is an audio version of our Feature: ‘I rarely get outside’: scientists ditch fieldwork in the age of AI
  • Briefing Chat: The canny cow that can use tools, and how babies share their microbiomes

    12:03|
    In this episode:00:24 How babies share their gut microbesNature: Sending babies to nursery completely reshapes their microbiome05:25 First evidence of tool use in cattleScience: No bull: This Austrian cow has learned to use toolsSubscribe to Nature Briefing, an unmissable daily round-up of science news, opinion and analysis free in your inbox every weekday.
  • The biggest 'Schrödinger's cat' yet — physicists put 7,000 atoms in superposition

    26:32|
    00:46 Protein-sized superposition surpasses previous experimentsNature: Pedalino et al.News: Schrödinger's cat just got bigger: quantum physicists create largest ever 'superposition'11:46 Research HighlightsNature: Ancient pottery reveals early evidence of mathematical thinkingNature: Gifted dogs learn new words by overhearing humans14:11 How Trump’s second term has impacted researchNature: US science after a year of TrumpNature: US science in 2026: five themes that will dominate Trump’s second year
  • Briefing Chat: Can NASA return rocks from Mars? And why dogs have long ears

    10:04|
    In this episode:00:40 The rock samples destined to remain on MarsNature: NASA won’t bring Mars samples back to Earth: this is the science that will be lost05:24 The genetics of dogs’ droopy earsNature: Do their ears hang low? The genetics of dogs’ adorable floppy earsSubscribe to Nature Briefing, an unmissable daily round-up of science news, opinion and analysis free in your inbox every weekday.
  • AI can turbocharge scientists' careers — but limit their scope

    21:38|
    In this episode:00:47 AI can boost research productivity — at what cost?Research article: Hao et al.10:10 Research HighlightsNature: Ancient ‘snowball’ Earth had frigidly briny seasNature: Putting immune cells into ‘night mode’ reduces heart-attack damage12:41 JWST images are full of red dots, what are they?Nature: Rusakov et al.Subscribe to Nature Briefing, an unmissable daily round-up of science news, opinion and analysis free in your inbox every weekday.
  • A mysterious ancient fingerprint and a lemon-shaped planet — the stories you’ve missed

    16:32|
    00:54 Turning an undersea cable into a seismic detectorResearchers have shown that they can piggyback a signal on a 4,400-kilometer-long telecom cable that runs from California to Hawaii, allowing it to act like 44,000 separate seismic-activity detectors. Their method takes advantage of impurities found in glass fibre-optic cables, which reflect light differently when they are stretched and distorted by the pressure of seismic waves.Science: Seafloor telecom cable transformed into giant earthquake detector04:17 The origin of an ancient boatChemical analysis of the caulking found on the wood an ancient boat has helped researchers identify the origins of the vessel, that sank off the coast of Denmark 2,400 years ago. The team’s analysis suggests it voyaged from much farther away that had been thought — perhaps coming from the Baltic Sea region. The team also found a fingerprint left in the caulk, although who it belonged to is unknown.LiveScience: Fingerprint of ancient seaborne raider found on Scandinavia's oldest plank boat08:29 How heating up helps some plants pollinateSome plants called cycads (Zamia spp.) heat up to attract the beetles that pollinate them. These beetles have heat-seeking sensors in their antennae, which they use locate the plants. Male cycads warm up around 3 hours before females, meaning that beetles head to them before first carrying pollen over to the females.Science: Heat-seeking beetles drawn to plants that glow in infrared13:08 The exoplanet shaped like a lemonThe discovery of exoplanet PSR J2322-2650b reveals how unusual other worlds can be. This exoplanet takes just 7.8 hours to orbit an ultra-dense pulsar whose intense gravity pulls PSR J2322-2650b into a lemon shape.New Scientist: Strange lemon-shaped exoplanet defies the rules of planet formationSubscribe to Nature Briefing, an unmissable daily round-up of science news, opinion and analysis free in your inbox every weekday.
  • Science in 2026: what to expect this year

    11:53|
    In this episode, reporter Miryam Naddaf joins us to talk about the big science events to look out for in 2026. We’ll hear about: small-scale AI models that could outcompete Large Language Models in reasoning, clinical trials of gene editing to treat rare human disorders, a sample collection mission from Phobos, and how changes to US policy by the Trump team are expected to impact science.Subscribe to Nature Briefing, an unmissable daily round-up of science news, opinion and analysis free in your inbox every weekday.
  • Audio long read: Will blockbuster obesity drugs revolutionize addiction treatment?

    17:54|
    Anecdotal stories suggesting that weight-loss drugs can help people shake long-standing addictions have been spreading fast in the past few years, through online forums, weight-loss clinics and news headlines. And now, clinical data are starting to back them up.Over a dozen randomized clinical studies testing whether GLP-1 drugs like Ozempic can suppress addiction are now under way, and neuroscientists are working out how these weight-loss drugs act on brain regions that control craving, reward and motivation.Scientists warn that the research is still in its early stages, but some researchers and physicians are excited, as no truly new class of addiction medicine has won approval from regulators in decades.This is an audio version of our Feature: Will blockbuster obesity drugs revolutionize addiction treatment?