A new evolutionary theory suggests changes in body size, rather than competition for food and habitat, may drive the earliest ...

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 has uncovered a surprising relationship between an animal’s body temperature and its likelihood of evolving into an herbivore. The study in the journal Global Ecology and Biogeography ...

A team of biologists in Montana and Germany has found that, regardless of type, those insects that express a protective stick- or leaf-like appearance all evolved the same basic body parts. In their ...

The water-to-land transition stands as one of the most significant events in vertebrate evolution, giving rise to the two major groups of living land vertebrates—amniotes and lissamphibians—which ...

One of the most consequential evolutionary truths of our species is the dramatic increase in the size of our brains. Our closest animal relative had no such brain boom. So what gives? And what does ...

A new evolutionary theory suggests changes in body size, rather than competition for food and habitat, may drive the earliest ...