In zero gravity, a candle's flame is round and blue.
16
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
Research indicates that plants grow healthier when they are stroked.
173
The earth is approx. 6,588,000,000,000,000,000 tons.
175
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Hot water can freeze faster than cold water.
181
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
German chemists made a replica of a trophy the size of one molecule.
68