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What on Earth?

by CBC
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Canada · News
#74 New on this chart
Pulse 17

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About the show

It’s a wild ride these days on our planet. Buckle up, because scientist (and actual pilot) Johanna Wagstaffe is here to help you make sense of our changing world, where the climate is warming just as everything else can feel like a hot mess. Every week, Jo and our team of journalists illuminate the ways humans are transforming Earth, and reveal a little wonder along the way. Our podcast, videos and radio show deliver science-backed answers to your questions, and help you understand what’s a real solution and what’s screwing things up.

Latest episodes

  • Can AI save the planet before it kills us all?

    October 3, 2026 · 25 min

    Depending on who you ask, AI could usher in a green utopia – or the apocalypse. Between those two extremes is a much less hypothetical reality: the technology’s huge impact on our environment now. But tech leaders like NVIDIA’s Jensen…

  • The weatherman who spoke the truth – and paid the price

    September 26, 2026 · 25 min

    When a meteorologist took a job in Iowa, he was excited to make his forecasts matter to viewers by bringing in climate impacts that were relevant to their lives, like rising costs and energy independence. But then the backlash began…

  • There's a lot on Carney's plate. Is our climate plan cooked?

    September 19, 2026 · 25 min

    As parliament gets back in session, there’s a lot going on: a trade war, talk of Alberta separation, and international alliances being redrawn. Prime Minister Mark Carney has been clear: he doesn’t think the old climate plan he inherited…

  • Is this Super El Niño a peek into forever weather?

    September 12, 2026 · 25 min

    It’s gonna be a record-breaking few months of weather. A natural surge of warm ocean water is colliding with a planet hotter than at any point in human history – meaning more heat, more floods, more droughts. Some think this Super El Niño…

  • Introducing our new host, Johanna Wagstaffe

    September 9, 2026 · 3 min

    She's a CBC science journalist, meteorologist and seismologist. Now she’s taking the helm as the host of your favourite climate change podcast. All summer long, Jo and the team have been cooking up new ideas and stories to help you make…

  • Heat killed his friend. Now his community is saving lives

    September 5, 2026 · 20 min

    Stephen Nelson tried to keep his friend Mario safe in the 2021 heat dome. But tragically, his friend died – in an old building that wasn’t designed for our warming world. This galvanized Stephen to do more to keep his community safe during…

  • More heat, more rats, more problems

    September 2, 2026 · 28 min

    From the best of What On Earth: A warmer world is great for rats. (Not so much for us). That’s why cities are seeing a climate-linked rise in rodents. Can birth control reverse that? Producer Molly Segal finds out how Chicago, Manhattan…

  • The disaster in Nepal as a ‘wake-up call from Mother Nature’

    August 29, 2026 · 27 min

    The search for survivors is underway after deadly flooding in Nepal and Tibet. But experts around the world are also unpacking what role climate change played in the disaster. We hear from two experts who know the region well, who say…