The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
You forget 90% of your dreams.
256
There is a mass reservoir of water floating in space that is 100,000 times bigger than our sun and holds 140 trillion times more water than all of our oceans.
11
The University of Oxford (teaching since 1096) predates the Aztec empire (1428 - 1521).
14
The 409 escalators in the London subway cover a distance every week which is approximately equivalent to several trips around the globe!
94
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
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