Russian cosmonauts aboard the ISS were forced to seal a hatch and don protective equipment after the arrival of a cargo ...

A discovery in northern Kenya hints that two extinct species that were our ancient relatives shared the same habitat and ...

Two species of ancient human relatives crossed paths 1.5 million years ago. Fossilized footprints in Kenya captured the ...

Two sets of fossilized footprints from early human species were made within a few hours of each other about 1.5 million years ...

Remarkably preserved footprints of Homo erectus and Paranthropus boisei offer direct evidence that extinct hominin species ...