There may be more to it than not getting enough sleep.
Most people endure acne at some point, and can't wait to be rid of the combination of whiteheads, blackheads, pimples, and pustules.
What brings on itches in the first place, and why does scratching provide such welcome relief?
Why does a paper cut hurt so much more than a cut with a razor blade?
Researchers have been studying the effects of UV rays on whales in the Gulf of California for over three years...
Find out how pain travels along the body's complex nerve highway.
Adult painted turtles head underwater, where they'll spend the winter on the bottom of a lake, pond, or river but they use some tricks to survive the cold...
What is frostbite and why is it so dangerous to your body?
How does hair development start, what is a hair follicle, and why does hair turn gray?