Mars had an oxygen-rich atmosphere around 4 billion years ago
13
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
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
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
The average person in their lifetime will spend an estimated 20,160 minutes kissing!
212
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
If you have 1 billion dollars and spend $1,000 every day, it would take you 2,740 years to go broke.
31
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