Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Only about 2% of the world population has green eyes.
36
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
A cow produces around 200,000 glasses of milk in her lifetime.
373
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
If Earth's history was condensed into twenty-four hours, life would've appeared at around 4am, land plants at 10:24pm, dinosaur extinction at 11:41pm, and human history would’ve began at 11:58:43pm.
21