In zero gravity, a candle's flame is round and blue.
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
No matter how cold it gets, gasoline will not freeze.
107
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
A ball of glass will bounce higher than a ball made of rubber.
73
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21