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.
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Brass doorknobs automatically disinfect themselves in about 8 hours.
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A single speck of dust is half way in size between a subatomic particle and the Earth.
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One gallon of used motor oil can ruin approximately one million gallons of fresh water!
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Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
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Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
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One third of the electricity produced on earth is used to power electric light bulbs!
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The left ear is more responsive to words of love and emotion whispered into it than the right.
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