In the new study, researchers compared digital 3-D models of ancient hominid footprints and trackways to those made by people today — including Kenyan herders who rarely or never wear shoes — ...

In How to Kill an Asteroid, Robin George Andrews looks at the successes and shortcomings of planetary defense.

Kidney cells can make memories too. At least, in a molecular sense. Neurons have historically been the cell most associated with memory. But far outside the brain, kidney cells can also store ...