My colleague and I have published a new study of cactus flowers which may help explain the conundrum. For more than a century ...

Add Yahoo as a preferred source to see more of our stories on Google. Most people get acquainted with their appendix when it's inflamed and about to rupture. Sebastian Kaulitzki/Science Photo Library ...

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 ...

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 ...

A new study shows cultural evolution helped humans expand across Earth far faster than genetic change alone could achieve.

Human evolution is often told as a tidy story of adaptation, yet some of our most familiar body parts still defy straightforward explanation. From the jut of the human chin to the curve of the outer ...

Most people know only two things about the appendix: You don’t need it – and if it bursts, you need surgery fast. That basic ...

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 4 billion years of our ...

(THE CONVERSATION) Most people know only two things about the appendix: You don’t need it – and if it bursts, you need surgery fast. That basic story traces back at least to Charles Darwin, the ...