A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
Nearly 50% of the world's scientists are assigned to military projects.
71
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Indoor pollution is 10 times more toxic than outdoor pollution.
62
Scientists aren't sure what color dinosaurs were.
312
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