Mars had an oxygen-rich atmosphere around 4 billion years ago
13
You forget 90% of your dreams.
256
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
If you have 1 billion dollars and spend $1,000 every day, it would take you 2,740 years to go broke.
31
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81