Sound travels fifteen times faster through steel than through air.
134
In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
39
Indoor pollution is 10 times more toxic than outdoor pollution.
62
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
In zero gravity, a candle's flame is round and blue.
16
Nearly 50% of the world's scientists are assigned to military projects.
71