The average temperature at 40,000 feet above sea level is -60 F.
56
Iron weighs more after it rusts.
16
Aluminum used to be more valuable than gold!
84
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
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
Cold water weighs more than hot water.
93
The sun is 330,330 times larger than the earth.
75