Cold water weighs more than hot water.
93
Sound travels fifteen times faster through steel than through air.
134
The bark of an older redwood tree is fireproof.
65
The sun is 330,330 times larger than the earth.
75
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
If the chemical sodium is dropped into water it will immediately and violently explode.
67
German chemists made a replica of a trophy the size of one molecule.
68
In the 1950s, the US government placed beer next to an atomic bomb blast to determine if it was still drinkable. The result: in the event of a nuclear war, beer is safe to drink!
16