Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
Sound at the right vibration can bore holes through a solid object.
134
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
Iron weighs more after it rusts.
16
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44