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
Lurch, a Watusi bull, had the largest horns in the world.
32
Your thumb is about the same size as your nose.
124
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82