Until now, the earliest known ivory artifacts came from the Upper Paleolithic, between 50,000 and 10,000 years ago. A few ...

Humans are still evolving ... technology could become a tool for seeing what we currently consider invisible, like different energies of light such as infrared and x-rays. There will eventually ...

About 41,000 years ago, Homo sapiens may have survived increased solar radiation caused by a weakening magnetic field by ...