In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
39
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
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
4.5 pounds of sunlight strike the Earth each day.
27
Pure water (H2O) does not conduct electricity on its own.
46
Nuclear power prevented an average of over 1.8 million deaths between 1971-2009 as a result of lower air pollution from reduced coal usage according to NASA.
5
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
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