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
Indoor pollution is 10 times more toxic than outdoor pollution.
62
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
Most dust particles in your house come from dead skin.
48
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
Research indicates that plants grow healthier when they are stroked.
173
Sound travels about 4 times faster in water than in air.
408