Real guppies respond to Robofish—a 3D-printed plastic model with a vaguely realistic paint job—as if it were a real schoolmate. Researchers used different-sized Robofish to show that guppy schools ...

Baby animals can turn a normal trip into a core memory, but only if you plan like an adult and behave like a respectful guest. The reliable strategy is to pick destinations where young animals appear ...

Have you ever imagined if creatures such as dragons, unicorns, or mermaids were actually a product of pure imagination? What if they originated from somewhere more real? Through the ages, human ...