What is The Schiller’s Effect and How it Makes Stones Seem Lighted Up Internally?

The rock isn’t lit from behind, and it isn’t see-through. It, along with others, seems as though it is lighting up internally. For centuries, this internal glow has stumped... Read more »

Alligators gobble rocks to stay underwater longer | Science

Peter Scoones/Minden Pictures Alligators dine on lots of weird specials: sharks, kumquats, and stones. Researchers have actually long believed that, like birds, gators swallow stones to assist them absorb... Read more »