Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
In zero gravity, a candle's flame is round and blue.
16
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
Scientists in Germany have developed a candy that doesn't cause cavities.
11
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
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
The left ear is more responsive to words of love and emotion whispered into it than the right.
40