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
Your body is creating and killing about 2.4 million red blood cells per second.
17
There is a persistent storm in Venezuela that produces lightning 140 to 160 nights a year, 10 hours per day and up to 280 times per hour and has been going since at least the 16th century.
25
The University of Oxford (teaching since 1096) predates the Aztec empire (1428 - 1521).
14
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
The average person in their lifetime will spend an estimated 20,160 minutes kissing!
212
You forget 90% of your dreams.
256