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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4.5 pounds of sunlight strike the Earth each day.
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The hair of an adult man or woman can stretch 25 percent of its length without breaking.
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Nuclear power prevented an average of over 1.8 million deaths between 1971-2009 as a result of lower air pollution from reduced coal usage according to NASA.
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The average home creates more pollution than does the average car.
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It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
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Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
The smell of freshly cut grass is actually a plant distress call.
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