Iron weighs more after it rusts.
16
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
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
The sun is 330,330 times larger than the earth.
75
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Balsa wood is classified as a hard wood!
41