The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
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
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
If aliens located 60-65 million light years away from us, looked at earth through a really powerful telescope today, they would see dinosaurs!
18
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
Cows can sleep standing up, but they can only dream lying down.
745