There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
A ball of glass will bounce higher than a ball made of rubber.
73
Hot water can freeze faster than cold water.
181
Pumice is the only rock that floats on water.
14
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
The smell of freshly cut grass is actually a plant distress call.
31
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310