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 ...

Polar bears thrive in the harsh Arctic due to unique adaptations. Scientists discovered their greasy fur prevents ice from sticking, helping them stay warm. A study analyzed the chemical makeup of ...

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. Bacterial DNA isolated from a ...