A new study has provided fresh insights into how animals such as the woolly mammoth, musk ox and arctic fox evolved to ...

When your immune system detects harmful microbes, your body raises its internal temperature to create a hostile environment. Turning up the heat suppresses the proliferation of invaders. In short, the ...

Sharks, skates and catfish also have tooth-like structures called denticles that make their skin feel like sandpaper. When Haridy studied the tissues of her catfish, she saw that the denticles were ...