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
Most dust particles in your house come from dead skin.
48
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
Cold water weighs more than hot water.
93
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
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39