Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
Sound at the right vibration can bore holes through a solid object.
134
Hot water can freeze faster than cold water.
181
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
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
Nylon is made from coal and petroleum.
42
The bark of an older redwood tree is fireproof.
65