Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
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
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Most dust particles in your house are made from dead skin!
67
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
Indoor pollution is 10 times more toxic than outdoor pollution.
62