Cows can sleep standing up, but they can only dream lying down.
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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
The largest breed of rabbit is the Flemish Giant.
65
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
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