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

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 ...

If we look across the whole of the mammal branch of the tree of life, we find there are many groups of mammals that have ...

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

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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 ...