Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Your thumb is about the same size as your nose.
124
Only about 2% of the world population has green eyes.
36
Lurch, a Watusi bull, had the largest horns in the world.
32
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
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
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81