For a lot of us at the Curiosity offices, coffee is the only thing that gets us going in the morning...and afternoon, and evening, and in the middle of the night when we're trying to wrap our minds around quantum physics. But soon, it might be the get-up-and-go drink of choice for vehicles as well, since researchers at Lancaster University have devised an efficient way to make biofuel from used coffee grounds. Maybe we'll have to start buying our cars donuts, too.
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Algae produces oily lipids and gases, which can both by burned as fuel. 02:47
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