MIT has developed a camera that captures the speed of light at a trillion frames per second.
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0.3% of solar energy from the Sahara is enough to power the whole of Europe.
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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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Indoor pollution is 10 times more toxic than outdoor pollution.
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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 revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
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