Scientists find genetic mutation, millions of years ago. Oct. 12, 2011 — -- About three million years ago human predecessors embarked on a new course that would forever alter the evolution of our ...

The human body is a machine whose many parts – from the microscopic details of our cells to our limbs, eyes, liver and brain – have been assembled in fits and starts over the four billion years of our ...

Recent fossil discoveries lend credence to the fascinating proposition that non-human species may have coexisted alongside our early human forebears. These unearthed remnants provide a glimpse into ...