Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
15
The smell of freshly cut grass is actually a plant distress call.
31
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
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
The earth is approx. 6,588,000,000,000,000,000 tons.
175
Aluminum used to be more valuable than gold!
84