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 ...

Why the Latest Science Leads Us to a New Theory of Human Nature, by Jonathan Leaf (Bombardier, 320 pp., $21) Ever since Darwin, biologists have believed that much could be learned about human nature ...

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 ...

Convergent evolution shows how life on Earth often develops similar traits under similar conditions—raising the question of ...