In zero gravity, a candle's flame is round and blue.
16
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
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
One ragweed plant can release as many as one billion grains of pollen!
51