Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
The strangers in your dreams are actually people that you've seen in real life.
50
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
A cow produces around 200,000 glasses of milk in her lifetime.
373
You forget 90% of your dreams.
256
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