Blue Zones were proposed as regions with some of the oldest people in the world, though recent studies cast some doubt on the idea. Do these regions still hold insights about longevity?
A facial approximation reveals what Zuzu, a man who lived 9,600 years ago in Brazil, may have looked like.
Birds do produce urine, but it doesn't come out the same way it does in humans. How birds pee may be an evolutionary adaptation that benefits flight.
Researchers are beginning to understand some of the potential causes of long COVID and are investigating treatments for the complex condition.