but there are always risks that a mission to drill into another world could carry invasive—and highly durable—Earth creatures along for the ride. (See “Going to Mars Could Mess Up the Hunt ...

Have you ever imagined a world ruled by gigantic creatures? From colossal snakes to sharks the size of buses, Earth has once been home to beings so massive, they challenge our understanding of size.

Medieval Europe was filled with terrifying legends and monstrous creatures that haunted the imaginations of its people. In ...

Animals, from worms and sponges to jellyfish and whales, contain anywhere from a few thousand to tens of trillions of nearly ...

A group of teeny tiny mouse-deer in the family Tragulidae numbers 10 species that live in warmer parts of Southeast Asia, India, and Africa. They are small, delicate, and extremely elusive: they are ...