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 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
A cow produces around 200,000 glasses of milk in her lifetime.
373
The 409 escalators in the London subway cover a distance every week which is approximately equivalent to several trips around the globe!
94
Cows can sleep standing up, but they can only dream lying down.
745