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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Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
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The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
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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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Out of all the senses, smell is most closely linked to memory.
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Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
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Airports that are at higher altitudes require a longer airstrip due to lower air density.
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Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
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