Scientists in Germany have developed a candy that doesn't cause cavities.
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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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Because heat expands the metal, the Eiffel Tower always leans away from the sun.
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German chemists made a replica of a trophy the size of one molecule.
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Brass doorknobs automatically disinfect themselves in about 8 hours.
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There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
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In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
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