Human evolution has often been depicted as a process of adaptation, where natural selection and genetic changes drive species ...

Globally, autism affects about 1 in 100 children, according to the World Health Organization. In the U.S., the rate is closer ...

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 ...