Science Friday

Updated: 06 May 2025 • 929 episodes
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Science Friday, as heard on PRI, is a weekly discussion of the latest news in science, technology, health, and the environment hosted by Ira Flatow. Ira interviews scientists, authors, and policymakers, and listeners can call in and ask questions as well.

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Millions of years ago, iguanas somehow got from North America to Fiji. Scientists think they made the trip on a raft of fallen vegetation. Also, the marine reptile’s fossilized fetus is cluing paleontologists into the lives of ancient sea creatures. Ancient Iguanas Floated 5,000 Miles Across The Pacific If you picture

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In “Into the Unknown,” an astronomer explores the mysteries of the cosmos and the limits of what science can test. What is time? If the universe is expanding, what is it expanding into? What happened just before the Big Bang? Some of the most head-scratching ideas in physics strain the limits of what science can test.

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Scientists bring us a lab-grown chicken nugget and texturally accurate, plant-based calamari. We’ll bite. There’s a movement in the world of science to find alternatives to meat and dairy products that don’t involve killing animals. Two avenues for this are by using animal cells in a lab, or going plant-based. Two brea

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Being able to belt out a tune like Adele or Pavarotti is not just about raw talent. The best singers in the world have to work on their technique—like how to control their breath and develop the stamina to hit note after note for a two-hour concert. But pop stars and opera singers aren’t the only vocalists who have fig

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It’s zombie season! At least if you’re watching the new season of the fungal thriller “The Last of Us,” airing right now on Max, which chronicles what happens after a fungus turns most of humanity into zombies. It’s fiction for us, but for some organisms on the planet, it’s more like a documentary. The fungus that zomb

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Research suggests that better understanding the psychological and neurological components of chronic pain may lead to better treatments. Chronic pain is remarkably common: Roughly 20% of adults in the US live with it. And people with chronic pain are more likely to have depression, anxiety, and substance abuse disorder

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