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
If you blowtorch Pepto-Bismol, you would get a hunk of metal.
114
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
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
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
The average home creates more pollution than does the average car.
33