Pumice is the only rock that floats on water.
14
The bark of an older redwood tree is fireproof.
65
Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
304
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
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Termites are being researched as a possible renewable energy source as they can produce up to 2 litres of hydrogen from ingesting a single sheet of paper, making them one of the planet’s most efficient bioreactors.
24