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 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 ...

Language has been an embarrassment for the theory of evolution for more than 150 years. Charles Darwin, who thought that language evolved from animal communication, argued, “The difference in mind ...