For more than a century, scientists have debated whether intelligence is mostly a product of nature or nurture. Identical ...

Sarah and Aimee Charlwood are identical twins. They didn't spend a day apart until they were 16. They share the same ...

File this under extremely rare but scientifically possible: Twins born to parents of different races can look so different ...

When we think of identical twins, we often imagine mirror images — same face, same smile and perhaps even the same talents. But what surprises many is that these genetic carbon copies can have ...

Born three months premature, the quads spent about 10 weeks in the hospital before three of them were allowed to go home. But the fourth, a baby girl named Chesley, remained behind and died just shy ...

VALHALLA, N.Y. -- About 11 months ago, parents Maria and Daniel Sparano welcomed their twins Emma and Nina into the world. On Monday, for the first time, the twins finally got a chance to meet since ...

New research complicates the old consensus that IQ is largely fixed, and that's good news for anyone looking to boost their ...