In zero gravity, a candle's flame is round and blue.
16
The average home creates more pollution than does the average car.
33
The force of a suction cup is calculated using F=AP.
15
The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
5
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
Out of all the senses, smell is most closely linked to memory.
146