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
A cubic yard of air weighs about 2 pounds at sea level.
31
The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
5
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
One barrel of petroleum holds 42 gallons.
20
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
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
The only letter not appearing on the Periodic Table is the letter "J".
180