Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
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Research indicates that plants grow healthier when they are stroked.
173
Scientists in Germany have developed a candy that doesn't cause cavities.
11
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Hot water can freeze faster than cold water.
181
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
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
21