The Amazing Human Brain

A rare condition renders people unable to picture mental images.

Sleep will consume one-third of your life. You can't avoid it, nor should you. Sound slumber is energizing and uplifting. But there's more to it. Sleep is also essential for effective learning.

Pump those mental brakes!

Pigeons may not have unraveled the mysteries of "Doctor Who"'s TARDIS just yet, but they do understand the abstract concepts of space and time.

You may have heard people describe themselves as strictly "right-brained" or "left-brained," but what exactly does that mean?

"Our Senses," a new museum exhibit, explains how our senses work and how they help to define what makes us human.

Bad, normal brain.

Injecting the blood plasma of healthy young people into people with Alzheimer's disease might be safe, but not all experts are behind the idea.

WASHINGTON — Humans and many other animals express a range of social behaviors, from cooperation to aggression.

A weak heart may age parts of the brain by 15 to 20 years.

The chemical key to controlling thoughts and memories? It might be molecule called GABA.

Astronauts who spend prolonged time in space experience noticeable changes to their brain's structure, a new study finds.

Fans of spicy foods might be doing their hearts a favor by adding more heat to their meals, a new study from China suggests.

If you've ever realized you were dreaming while you were still asleep, you've had what's called a lucid dream.

Even if you're a generous person who believes in sharing, helping the needy and spreading wealth, your brain is a selfish glutton.

Want to follow conversations better in a noisy restaurant or bar? There soon may be an app for that.