In zero gravity, a candle's flame is round and blue.
16
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
Most dust particles in your house are made from dead skin!
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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
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
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