Rebroadcast: Biological anthropologist James Holland Jones explains how diseases typically spread from animal to human populations and how that might change as our planet continues to warm. He also discusses how we might prevent future epidemics with limited vaccines by looking to community structure and identifying the key bridge populations. Season 5, Episode 7

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Astrobiologist David Grinspoon takes the anthropocene off-planet to our nearest cosmic neighbor Venus and discusses what we learn about climate change here on Earth from Venus’ catastrophic green-house effect. Season 4, Episode 6

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Climate researcher and host of "PBS’s Earth: The Operators’ Manual" Richard Alley discusses rapid changes in Earth’s climate through history and how this relates to our impacts today. Does the Earth’s climate have dials, or switches? Season 3, Episode 8

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Literary critic and pop culture enthusiast Ursula Heise dissects environmental storytelling and its relation to science… both real and fictional. Season 2, Episode 6

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