Sound travels fifteen times faster through steel than through air.
134
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 sun is 330,330 times larger than the earth.
75
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
Most dust particles in your house come from dead skin.
48
Sound travels about 4 times faster in water than in air.
408
The earth is approx. 6,588,000,000,000,000,000 tons.
175