Human testicles are much smaller, in proportion, to some of our primate cousins. Evolution can tell us why. But the size of ...

The tree of life maps out the relationships between all living things, and it's in constant flux. ... Human Evolution Human evolution: Facts about the past 300,000 years of Homo sapiens.

Evolution is the way groups of life-forms change over time to better fit the places they live.It is why life takes "such ...

Birds are the most diverse land vertebrate on the planet, and now scientists have constructed a complete evolutionary tree of the 11,000 or so known species. This data came from hundreds of studies ...

Humans lost their ability to synthesize their own vitamin C because our ancestors had access to plenty of fruit.

We know that Darwinian evolution acts on all forms of life, ... Otto and his team used a system of three different self-replicating molecules, that, under the right conditions, ...

Scientists have shed new light on the rhino family tree after recovering a protein sequence from a fossilized tooth from more ...