Life on Earth began in a way that still boggles the mind. Around 4.5 billion years ago, a chemical process called abiogenesis ...

Human newborns arrive remarkably underdeveloped. The reason lies in a deep evolutionary trade-off between big brains, bipedalism and the limits of motherhood.

One of the defining features of human evolution is the steady expansion of our brains. New findings suggest this growth may be partly linked to higher levels of estrogen before birth. Surprisingly, a ...

Like other living creatures, humans have been shaped by evolution. Over time, we have developed – and continue to develop – traits that help us survive.

The evolution of human hands is one of the most important – and overlooked – stories of our origin. Now, new fossil evidence ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. A reconstruction of the crushed skull labelled Yunxian 2, which has features that are closer to species thought to have existed ...

Learn how the chin became an evolutionary byproduct that's unique to humans.

Learn how repeated burn injuries may have acted as a form of natural selection, influencing human genes linked to healing and immune response.

Humans' exposure to high temperature burn injuries may have played an important role in our evolutionary development, shaping ...

A new analysis argues that this daily work of processing and cooking food helped reshape human bodies and social life. It ...

Scientists find genetic mutation, millions of years ago. Oct. 12, 2011 — -- About three million years ago human predecessors embarked on a new course that would forever alter the evolution of our ...