Using a new method of modeling genetic data, researchers identified a split in human ancestry dating back 1.5 million years. The two populations later reconnected. The mystery population (Population B ...

New research has shown that modern humans descend from not one but two separate ancient human ancestral lineages.

A stunning discovery in China is shaking up what we thought we knew about human evolution. Scientists have uncovered a ...

"Our immune system function, our gut microbiome, even our very DNA changes," she explained. Allen said without the constant tug of gravity, muscle mass and bone density start to deplete.