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kinselection600x350 Does Kin Selection Explain Altruism?

There’s a curious puzzle unanswered by the theory of evolution: why do some animals give up their chance to reproduce to help others reproduce instead? For decades biologists have suggested family was the reason, but that has recently been challenged.

lead600x350 What Makes Lead So Poisonous?

The people of Flint, MI were horrified to find their drinking water was poisoned with lead. As we learn more about lead’s effects and realize how persistent it is, the more worrying it becomes. What makes lead so toxic?

Courtesy NASA How Big Bang Theory Works, with Neil deGrasse Tyson

There are a number of theories for how the universe evolved but none are more widely accepted than the Big Bang theory. Learn about the mind-boggling details of the early universe and hear Dr. Neil deGrasse Tyson talk about what it will take for us to know its origins.

How the Gender Pay Gap Works

The gender pay gap is the amount of time into the next year a woman must work to earn as much as a man did the previous year. And it's narrowing at a snail's pace.

strikes_600x350 How Labor Strikes Work

Labor strikes are the last resort of a workforce frustrated with low pay or dangerous working conditions. A big part of winning a wage war is having the public in your side. Learn all about strikes in today's episode.

cats-600x350 Our cats episode – right here, right meow

Cats are the most popular pet in the United States, despite the fact that we've only been keeping them indoors for 50-60 years. Learn about more cat facts in today's episode.

nostalgia_600x350 Nostalgia is not the most toxic impulse

Nostalgia is a funny thing. It's not home sickness, it's more connected to emotions and a time in your life. But is nostalgia worthwhile? Nascent science says it just might be.

Hatfield_Clan600x350 What Was the Deal With the Hatfields and McCoys?

It was America's most famous family feud, but the history of the Hatfields vs the McCoys is fraught with bias and inaccuracies. Dig into a disagreement in 19th-century Appalachia that became a very big deal around the world.

Bret Hartman/TED How TED Talks Work: Featuring Roman Mars

TED Talks have been around longer than you think. They became really popular once YouTube came along to bring their often inspirational messages to the world, 18 minutes at a time. In this episode, we interview an actual TED talker, the host of the 99% Invisible podcast, Roman Mars.

dikobraziy/Thinkstock Who Gets to Name Continents?

America is named after Amerigo Vespucci, right? Maybe not. And who named Australia? Find out the unusually uncertain origins of the continents and other interesting stuff in this episode.

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