The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
If you have 1 billion dollars and spend $1,000 every day, it would take you 2,740 years to go broke.
31
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
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 focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
12
Only about 2% of the world population has green eyes.
36
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31