In zero gravity, a candle's flame is round and blue.
16
One barrel of petroleum holds 42 gallons.
20
The idea of left brain (logical) and right brain (creative) has no basis in neuroscience and is in fact a myth.
16
Hot water can freeze faster than cold water.
181
The earth is approx. 6,588,000,000,000,000,000 tons.
175
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Indoor pollution is 10 times more toxic than outdoor pollution.
62
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17