Pumice is the only rock that floats on water.
14
Most dust particles in your house come from dead skin.
48
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Scientists are attempting to create a synthetic brain by reverse-engineering the mammalian brain down to the molecular level. A cellular human brain is predicted possible by 2023. It hopes to shed light on consciousness.
10
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 ball of glass will bounce higher than a ball made of rubber.
73
Nearly 50% of the world's scientists are assigned to military projects.
71
Nylon is made from coal and petroleum.
42