There are so many kinds of apples that if you ate a new one everyday, it would take over 20 years to try them all.
34
The strangers in your dreams are actually people that you've seen in real life.
50
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
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
You forget 90% of your dreams.
256
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31