The earth is approx. 6,588,000,000,000,000,000 tons.
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The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
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Brass doorknobs automatically disinfect themselves in about 8 hours.
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Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
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Scientists are attempting to create a synthetic brain by reverse-engineering the mammalian brain down to the molecular level. A cellular human brain is predicted possible by 2023. It hopes to shed light on consciousness.
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One cubic foot of gold weighs more than 1,200 pounds!
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During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
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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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