For a long time, both scientists and the general p...  ...While that idea hasn't been completely debunked, genetic research tells us skin color is a lot more compli...  ...t more complicated. Until recently just about all genetic research on skin color came from studies done on...  ...studies done on people of E...

Mark and Scott Kelly are identical twins who were...  ...entire year in space aboard the ISS. Now NASA is studying the differences between the two after Scott's yea...  ...e intriguing.As identical twins, the brothers are genetically very similar. However, researchers found that whi...  ...State University, told...