Spiders, crabs, and other arthropods evolved from a group of animals that underwent a burst of diversity around 500 million ...

A never-before-seen predatory crustacean that feeds on other smaller creatures in the hadal zone was discovered in the Atacama Trench at a depth of 25,900 feet.

Bones fall into two main categories. The axial skeleton contains the bones that support the middle of your body, and the appendicular skeleton includes bones that make up your appendages (arms and ...