The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court.
140
There is a persistent storm in Venezuela that produces lightning 140 to 160 nights a year, 10 hours per day and up to 280 times per hour and has been going since at least the 16th century.
25
The 409 escalators in the London subway cover a distance every week which is approximately equivalent to several trips around the globe!
94
No one knows Albert Einstein's last words. Just before he passed, he spoke several words in German, but his nurse only knew English.
154
Only about 2% of the world population has green eyes.
36
Your thumb is about the same size as your nose.
124