Renewable energy and the case for climate optimism with Bill McKibben
Is the clean energy revolution finally here? Over the past few years, the world has experienced a sudden and overwhelming surge in renewable energy installation and generation, outpacing even the most optimistic predictions from experts. This week on the GZERO World Podcast, Ian Bremmer talks to Bill McKibben, an environmentalist and author, about the stakes and scale of the global energy transformation. His new book, Here Comes the Sun, argues renewables aren’t just a climate fix—they’re a political and economic opportunity. But while China and Europe are pushing ahead in the race to power the future, the Trump administration is doubling down on fossil fuels. What happens if the US puts the brakes on clean energy, just as the rest of the world hits the gas? Or rather... plugs in the solar battery? Do we risk being left in the dark?Host: Ian BremmerGuest: Bill McKibben
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How AI will revolutionize medicine with Siddhartha Mukherjee
On the latest episode of the GZERO World podcast, Ian Bremmer talks with world-renowned cancer researcher and Pulitzer Prize-winning author Siddhartha Mukherjee about the future of medicine—and why artificial intelligence might finally tip the scales in the decades-long war on cancer.Cancer remains the second leading cause of death in the US, killing nearly 1,700 people every day. But Mukherjee says AI is already reshaping the field, from radiology and diagnostics to identifying new carcinogens and designing entirely new cancer drugs. “Every time we do this in collaboration with a machine,” he explains, “the machine learns it, and it learns it forever.”In a wide-ranging conversation, Mukherjee breaks down three major areas where AI is advancing medicine: patient care, data mining, and generative drug development. He also weighs in on early cancer detection, how inflammation may hold the key to understanding new carcinogens, and why this moment may be the most hopeful in half a century of cancer research.Host: Ian BremmerGuest: Siddhartha Mukherjee
Subscribe to the GZERO World with Ian Bremmer Podcast on Apple Podcasts, Spotify, or your preferred podcast platform, to receive new episodes as soon as they're published.
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Rethinking the refugee crisis and global aid system, with David Miliband
The number of people forced to flee their homes because of war, persecution, humanitarian disaster or political collapse topped 123 million people in 2024. That’s double what it was just 10 years ago. Yet just as the need has exploded, the global aid system is unraveling. On the GZERO World Podcast, David Miliband, president & CEO of the International Rescue Committee sits down with Ian Bremmer to discuss the growing crisis as the number of refugees continues to rise and the US, once the anchor of the global aid system, shuts down USAID and drastically pulls back foreign funding.Miliband says we’re facing “a new abnormal,” with 275 million people facing humanitarian emergencies in 20 countries in crisis. The vast majority of displaced people are hosted in low and middle income countries, meaning the world’s poorest and most under-resourced places are shouldering a disproportionately high share of the burden. Miliband and Bremmer discuss the worsening humanitarian situation in places like Sudan and Gaza, the impact of US aid cuts, whether any nation or group of nations can fill the void, and where Miliband sees glimmers of hope amid so many intractable problems.Host: Ian BremmerGuest: David Miliband
Subscribe to the GZERO World with Ian Bremmer Podcast on Apple Podcasts, Spotify, or your preferred podcast platform, to receive new episodes as soon as they're published.
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Pakistan needs to stand up to India, says former Foreign Minister Hina Khar
After nearly eight decades of on-again-off-again conflict, India and Pakistan neared the brink of all-out war last spring. The intense, four-day conflict was an unsettling reminder of the dangers of military escalation between two nuclear-armed adversaries. Though the ceasefire was reached and both sides claimed victory, Delhi and Islamabad are still on edge and tensions remain high. On the GZERO World Podcast, former Pakistani Foreign Minister Hina Khar joins Ian Bremmer to discuss Pakistan’s response to India’s strikes, which she believes were unjustified, and why Pakistan needs to defend itself from further aggression.One fifth of the world’s population lives on the Indian subcontinent, and Khar says putting them at stake because of a political conflict is dangerous because “you do not know how quickly you can go up the escalation ladder.” Bremmer and Khar also discuss the US role in mediating the conflict with India, Pakistan’s domestic and economic challenges, its strategic partnership with China, and the dangers for global security if the world abandons a rules-based international order.“As someone who was representing this country as foreign minister, I used to wonder, why were we reduced to eating grass to become a nuclear power?” Khar says, “And now, that is the only thing providing deterrence and security against a country which feels it can attack us anytime, any day.”Host: Ian BremmerGuest: Hina Khar
Subscribe to the GZERO World with Ian Bremmer Podcast on Apple Podcasts, Spotify, or your preferred podcast platform, to receive new episodes as soon as they're published.
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Trump vs higher education, with Harvard Law's Noah Feldman
From lawsuits and executive orders to funding cuts tied to antisemitism claims, the Trump White House is targeting institutions like Harvard and Columbia in what Feldman calls an effort to undermine independent centers of truth. “Trump's gone after universities, he's gone after media, and he's going after courts,” Feldman tells Ian. “Each in its own way is an independent institutional voice telling people, ‘This is the way things are.’”On the latest episode of the GZERO World Podcast, Feldman explains why this isn’t just about cancel culture or campus politics—it's about whether universities will remain places where truth is pursued freely, or "knuckle" under political pressure. He discusses Harvard’s legal fight with the administration, growing antisemitism on and off campus, and the deeper risks for American democracy if academic independence erodes.Host: Ian BremmerGuest: Noah Feldman
Subscribe to the GZERO World with Ian Bremmer Podcast on Apple Podcasts, Spotify, or your preferred podcast platform, to receive new episodes as soon as they're published.
The United States will no longer play global policeman, and no one else wants the job. This is not a G-7 or a G-20 world. Welcome to the GZERO, a world made volatile by an intensifying international battle for power and influence. Every week on this podcast, Ian Bremmer will interview the world leaders and the thought leaders shaping our GZERO World.
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