Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
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In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
13
Most liquid laundry detergents are alive with living organisms that help to break down stains!
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