Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
The human brain is more active during sleep than during the day.
28
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
A person can live without food for about a month, but only about a week without water.
156