It's called a "tardigrade" or "water bear". It's just one of many aquatic invertebrates on the planet, but it's unlike any other life form that scientists know of. Less than a millimeter in size ...

I approached her very, very slowly,' he says, 'and then drifted. It was a cat-and-mouse game.' When the bear slipped into the water, he just waited. 'There was just a flat, world of water and ice and ...

The genomes of two species of water bears reveal clues about how they persist in extreme conditions, yet don’t resolve the animals’ debated evolutionary story. A series of rodent experiments showed ...

These microorganisms are so tough that India is launching them to space to study how they survive in extreme environments.