Scientists have discovered that marsupial forelimbs (arms) develop much earlier before birth than previously thought, ...

The story of Earth's first animals may need rewriting after ancient fossils revealed an earlier start to complex life.

Artistic representations of ancient humans often show large men with bulging muscles – but our ancestors were actually ...

Here's a more rigorous approach to explaining personality disorders like narcissism from the physical ground up.

Are dogs really more loyal, or is that just a myth? New animal behavior research shows dogs and cats both build strong ...

The Ediacara Biota are some of the strangest fossils ever found—soft-bodied organisms preserved in remarkable detail where preservation shouldn’t be possible. Scientists now think their survival in ...