Duplicated genes that appear in every branch of the tree of life can provide us with insight into the evolution that occurred ...

Add Yahoo as a preferred source to see more of our stories on Google. These roots were cut too close to the trunk. We don’t often think about the roots of trees until there is a problem. A forester ...

The cell--the irreducible unit of life on Earth--has an estimated history nigh on 3.5 billion years. Scientists since Charles Darwin have attempted to trace that history to a so-called last common ...