It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
Aluminum used to be more valuable than gold!
84
Galalith is a type of plastic that can be made from milk. It is odourless, insoluble in water, biodegradable, anti-allergenic, antistatic, and virtually non-flammable.
1
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
The earth is approx. 6,588,000,000,000,000,000 tons.
175
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Your brain is 80% water.
525
In zero gravity, a candle's flame is round and blue.
16