A team of Stanford University scientists, using the largest-ever genetic analysis of remote tribal people, has determined that the human family tree is rooted in one of the world’s most marginal and ...

The human gut microbiota (GM) is vital for host nutrition, metabolism, pathogen resistance and immune function 1, and varies with diet, lifestyle and environment 2,3,4. Together, the host and ...

The social behaviour of humans poses a significant evolutionary puzzle. Influenced by 'prosocial' motivations, we routinely help our relatives and friends in ways big and small, from donating kidneys ...

A fire crackles just after dawn in north Tanzania's bushlands. The sun is starting to rise over the Yaeda Valley and the start of a new day means one thing for the Hadza tribe. It's time to begin ...