Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
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
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
There is a surgical implant being developed that will give you an orgasm at the touch of a button.
20