To estimate the weight of a rock, you pick it up. Is it rough, or smooth? You run a finger over it. We're constantly gathering information through our sense of touch, which is closely connected to how ...

More than 40,000 years ago, Ice Age humans were carving repeated patterns of dots, lines, and crosses into tools and small ivory figurines. A new computational study of more than 3,000 of these ...

A finger moving across dry sand meets resistance that the eye cannot see. The sand shifts in ways too small for conscious measurement, yet something in the hand registers the change. Beneath the ...