"We are very different from all previous species, and we have the power to endure. We also have the power to destroy ourselves." — Lord Martin Rees Ryan Lash/TED hide caption

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TED Radio Hour

Lord Martin Rees: How Can We Ensure Our Survival As A Species?

Astronomer and cosmologist Lord Martin Rees asks whether our species will endure despite the many existential threats we face.

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"When you keep the joy, you keep the laughter, you keep singing the song ... that is how women resist and show their resilience." — Zainab Salbi James Duncan Davidson/TED hide caption

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"Resilience is not something where we should just cross our fingers and hope we have ... it's a muscle we can build." — Monica Lewinsky James Duncan Davidson/TED hide caption

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According to legend, the Explorers Club — a society of scientific adventurers — served its members a prehistoric dish at its annual dinner in 1951. By some accounts, the mystery meat was woolly mammoth; by others, extinct giant sloth. Now DNA analysis has provided a definitive answer — and unraveled a decades-long deception. Katherine Du/NPR hide caption

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Alchemist Hennig Brand looks focused, if maybe a bit drained, in this 1795 painting by Joseph Wright. The painting depicts Brand's discovery of the chemical element phosphorus. Joseph Wright of Derby/Wikimedia hide caption

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Jae Rhim Lee models her mushroom burial suit at the TED conference. James Duncan Davidson/TED hide caption

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BJ Miller speaking at TED. Bret Hartman/TED hide caption

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Nyumah (left) and Sahr, just a few days after the dramatic bonfire ceremony that restored their friendship. Sara Terry/Catalyst for Peace hide caption

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Hidden Brain

Fambul Tok: Forgiveness And 'Family Talk' In Sierra Leone

Following 11 years of brutal civil war, perpetrators and victims are forging peace around bonfires across Sierra Leone.

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A man walks through the snow during a winter storm at at JFK Plaza, commonly known as Love Park, in Philadelphia. Why are such storms linked with an uptick in births? Researcher Richard Evans has a theory: "If the lights go out and there's no TV, it kind of sets the table for romance." Matt Rourke/AP hide caption

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We're using social science to help our News Assistant Max Nesterak quit smoking. Basil Arteomov/Flickr hide caption

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Hidden Brain

Why It's Not Too Late To Make A New Year's Resolution

Today is the perfect day to (re)start your resolution. Here's how.

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"Einstein once said, 'Logic will get you from A to B. Imagination will take you everywhere.' " — Daniele Quercia Wolfram Scheible/TED hide caption

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"The city, the township, is a natural expression, a natural manifestation of that social instinct that we have. ... They define us." — Benjamin Barber James Duncan Davidson/TED hide caption

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"Cities are where you can see your mayor in a grocery store." — Kasim Reed Courtesy of TEDCity2.0 hide caption

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"Fragile cities ... will define the future of order and disorder." — Robert Muggah James Duncan Davidson/TED hide caption

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"Cities are meant to be for people. They are meant as places for people to come together." — Amanda Burden James Duncan Davidson/TED hide caption

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There are so many opportunities to screw up pumpkin pie. But done right, it can win friends and influence people. Meredith Rizzo/NPR hide caption

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"I was honest with myself about ... not ever putting myself at risk to be in anybody's institution or prison." — Ismael Nazario Courtesy of TEDxNewYork hide caption

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"I think everyone has the capacity to do things within them that maybe they are not aware of — or maybe only have to do in difficult circumstances." — Dame Ellen MacArthur Bret Hartman/TED hide caption

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TED Radio Hour

Dame Ellen MacArthur: How Does The Journey Change The Hero?

After completing her harrowing solo sail around the world, Dame Ellen MacArthur describes how that journey transformed her.

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