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 have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
If you blowtorch Pepto-Bismol, you would get a hunk of metal.
114
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
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Your brain is 80% water.
525
The earth is approx. 6,588,000,000,000,000,000 tons.
175