Antarctic icefish have clear blood, no hemoglobin, and antifreeze proteins that let them survive freezing seas.

The finding offers a small window of hope for a polar bear population vulnerable to the effects of climate change.

In one of the most remote and harsh environments on Earth, three penguin species are telling a story that’s about much more ...

Two important concepts in evolutionary biology, mutualism and altruism, were first made famous by the colorful anarchist prince Peter Kropotkin. He argued that cooperation could be an equally powerful ...