If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
A ball of glass will bounce higher than a ball made of rubber.
73
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
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
Scientists aren't sure what color dinosaurs were.
312
Pumice is the only rock that floats on water.
14
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
