Scientists believe human brain development is the result of genetic mutations that occurred millions of years ago.
Though some of the oldest surviving felines, cheetahs have the genetic diversity equivalent to identical twins.
Many indigenous people live in areas of low oxygen concentration with few adverse effects. The big question is, how do they survive?
The trouble is, when antibiotics are used in small amounts over long periods of time, drug resistant super bugs can develop.
How did animals respond to the ice age? Ancient bison preserved in the Canadian arctic have given scientists a clue.
Why are diseases like cancer so common in humans but so rare in chimps?
Scientists have found another reason why modern tomatoes have little or no taste. It's in their genes.
Wouldn't it be great if we could trade genes with other species?
Depression may have an evolutionary benefit. It may improve one's chances of fighting off infection.
A team of scientists wondering if some bees might be natural risk takers decided to put that question to the test.