A simple finger drag through sand does not seem like much, yet a new set of studies from researchers at Queen Mary University of London and University College London shows that this quiet motion ...

Sand has a memory of sorts. Press into a loose pile of dry grains and something moves, not just where your finger sits, but farther out, ahead of where you have not yet reached. That disturbance ...

Crows don’t just remember humans. Here’s a breakdown of how they form opinions, assign reputations and teach each other who to trust. If you’ve ever felt like a crow was watching you a little too ...