Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Nylon is made from coal and petroleum.
42
A cesium atom in an atomic clock beats over nine billion times a second.
43
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
The bark of an older redwood tree is fireproof.
65
There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
13
The smell of freshly cut grass is actually a plant distress call.
31
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89