The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
In Georgia, there is an airtight room called the Crypt of Civilization that was sealed in 1940. It contains numerous artefacts documenting what life was like at the time of sealing, and is scheduled to be opened in the year 8113 to show people of the future exactly what life was like.
13
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
If you have 1 billion dollars and spend $1,000 every day, it would take you 2,740 years to go broke.
31
Your body is creating and killing about 2.4 million red blood cells per second.
17
The average person in their lifetime will spend an estimated 20,160 minutes kissing!
212
Only about 2% of the world population has green eyes.
36
You forget 90% of your dreams.
256