Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Your body is creating and killing about 2.4 million red blood cells per second.
17
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
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
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
Lurch, a Watusi bull, had the largest horns in the world.
32
The 409 escalators in the London subway cover a distance every week which is approximately equivalent to several trips around the globe!
94
Mars had an oxygen-rich atmosphere around 4 billion years ago
13