Life Science

Predicting the future is a tricky business. We've long been promised flying cars and robot maids, only to be disappointed year after year. What might the crystal ball have in store for us in 2050?

By Molly Edmonds

Of course they can. They do it every day when they wag and meow their undying love for you. Why are pets such a solid prescription for smiles?

By Jennifer Horton

Whether it's "Happy," "Baby Shark," or "Call Me Maybe," some tunes just live rent-free in your brain. But why do songs get stuck in your head?

By Stephanie Watson

We talk about morals in relation to raising children, voting for political candidates and criticizing people who don't see eye-to-eye with us. But is morality even a choice? Or is it all in your head?

By Molly Edmonds

There are people who are smart, and there are people who are people-smart. The guy you want in your think tank isn't necessarily the same person you want at your birthday party. But can emotional intelligence say more about your brain than IQ can?

By Molly Edmonds

Do gender differences go beyond our reproductive organs? Popular culture would have you believe that men are from Mars, while women call Venus their planet of birth. Is it possible to finish the argument of nature versus nurture?

By Molly Edmonds

Compare neuroscientists with crackerjack detectives like Nancy Drew and Hercule Poirot, and the brain docs might come up short. After all, they have yet to crack the case on five big brain mysteries.

By Molly Edmonds

Laugh and the world laughs with you, the saying goes. In our image gallery, experience the range of human emotions from around the world.

You only use 10 percent of that big, wrinkled mass of smarts -- unless you listen to Mozart. At least, that's what we've heard about the brain. But how many common brain beliefs are just plain wrong?

By Shanna Freeman

Parents just don't understand. Scientists didn't understand either, until they got a good look inside the teenage brain -- and what they saw turned what we thought we knew on its head.

By Molly Edmonds

We've all seen the effects that hatred has on our society, but just what is this destructive emotion? And can it be overcome?

By Alia Hoyt

A mass extinction on Earth is long overdue, according to population ecologists. Find out what Earth's fossil record may be telling us about our future.

By Josh Clark

When you see someone else yawn, you often find yourself doing it. Yawning is contagious. But what does that have to do with the ability to feel empathy?

By Josh Clark

The results of three recent studies show that an uncircumcised man is twice as likely to contract AIDS from an infected woman as is a circumcised one.

By Julia Layton

With an ever-increasing number of studies finding a direct connection between sleep deprivation and weight gain, it's difficult to deny the cause-and-effect relationship.

By Julia Layton

Even if you're very ticklish, you probably are incapable of tickling yourself. Learn why.

Nature uses color in lots of different ways. Find out why some types of cabbage are purple and what this means.

How can children from the same parents look so different? I mean, why don't all kids from the same parents look exactly alike, since the parents just have one set of chromosomes each and they don't change?

Ever since I took biology in high school I have wondered -- why do humans (and plants and animals) have two of every gene, and why is one "dominant" and the other "recessive"? How does my body know which one is dominant? How does it pick between the

Evolution is fascinating because it attempts to answer one of the most basic human questions: Where did life, and human beings, come from? The theory of evolution proposes that life and humans arose through a natural process.

By Marshall Brain

The physical you is a result of your DNA, and your DNA is part of the human gene pool. Find out what the "gene pool" really is and what happens when it shrinks.

By Marshall Brain

HIV continues to be a major global public health issue, having claimed more than 35 million lives so far.

By Kevin Bonsor & Oisin Curran

Whether brain death is a result of cardiac arrest and lack of oxygen to the brain, or of a gunshot wound to the head, the diagnosis is the same. Learn what the term "brain dead" actually means.

By Leslie C. Olson

In this article, we'll look at laughter -- what it is, what happens in our brains when we laugh, what makes us laugh and how it can make us healthier and happier. You'll also learn that there's a tremendous amount that no one understands yet.

By Marshall Brain

There is a good chance that if you go to the grocery store and buy a bunch of grapes that they will be of the seedless variety. If the grapes are seedless, how are they able to produce new grapes? Find out the answer to that question in this article.