A new study shows a sex difference in the early growth of the human brain. Does it matter?

The loss of a pet can affect you more than losing a loved one, a new study shows. With one exception.

Compared to chimps or gorillas, human males are unusually well endowed. A new study suggests it's partly because men 'size each other up' before a fight.

You really do benefit from 'friends with benefits,' a new study suggests. Also, a forgotten birthday can tank employee morale and a look at how the Autobahn lead to more support for the Nazi party.

When it feels like society's breaking down right before your eyes, it's called anomie. And it can lead to an even a darker place.

It's an interesting question. Even more intriguing is why you believe what you do — and whether you live near a city.

Cannibalism happened among the Neanderthals. That much we knew. Now, a paleoanthropological discovery has possibly uncovered an ugly truth about our distant cousins. Conor and Gabe head to a cave in Belgium to check it out.

Thanks to everybody who listened during this year. Most of all, thank you to those who wrote to us and — in the process — became part of our show.

Want to like someone more? It just takes eight seconds. Also, mice that smelled bacon... had more obese children?

$1,000 is put in your hand. With one condition: You have to donate it. What do you do next?