Do we really live in a selfish, dog-eat-dog world? Or has evolution carved out a hidden code that rewards genuine cooperation?

From the stage to the cage, a series of showdowns that leave us wondering about the price of being right ... or coming from the left.

Historians say the past is a foreign country, but often it feels more like a dream. Today we talk to someone who has mastered the art of navigating the dreamscapes of our past.

Today, we find ourselves in a room in Cleveland, Ohio, where a group of journalists are challenging the way we think about newspapers, and ourselves.

We explore three little words embedded in the 8th Amendment of the U.S. Constitution: “cruel and unusual.”

What’s the smartest animal in the world? We figure it out the best way we know how... an animal game show.

A scientist launches a controversial genetic test for intelligence: what does it really tell us?

A journey to one of the darkest sides of humanity’s attempts to measure the human mind and put people in boxes.

When Albert Einstein died, someone stole his brain — and kicked off a scavenger hunt for genius that won’t seem to let us go.