A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
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
For every gallon of sea water, you get more than a quarter pound of salt.
45
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Indoor pollution is 10 times more toxic than outdoor pollution.
62
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75