Explores the anatomy and functions of human joints, categorizing them into three main types: fibrous, cartilaginous, and synovial. It details the characteristics and subtypes of each joint type, ...

The tegu lizard (left) walks with a low-to-the-ground sprawling pose, while the contrasting greyhound (right) stands upright. (Peter Bishop/Harvard University) (CN) — What do an alligator, a greyhound ...

Given last week’s election results, it’s a good time to think about movements. Wikipedia defines a social movement as “A coordinated group action focused on a political or social issue.” That allows ...