Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
88
Kissing an infection-free partner is good for your teeth!
141
The human brain is more active during sleep than during the day.
28
You can only remember 4 things at a time.
31
Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
103