The strangers in your dreams are actually people that you've seen in real life.
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Your body is creating and killing about 2.4 million red blood cells per second.
17
The University of Oxford (teaching since 1096) predates the Aztec empire (1428 - 1521).
14
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.
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In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
In Georgia, there is an airtight room called the Crypt of Civilization that was sealed in 1940. It contains numerous artefacts documenting what life was like at the time of sealing, and is scheduled to be opened in the year 8113 to show people of the future exactly what life was like.
13
Only about 2% of the world population has green eyes.
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