One of my favourite meals is finding a stick and roasting a sausage on a camp fire. But I've started wondering, how sustainable is a campfire?

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Wood is 45% carbon

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When wood burns, some of that carbon is released in gas form as CO2.

Plants draw this gas out of the air and together with sunlight and water, they grow their leaves and branches. Hello, photosynthesis!
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Together with water, carbon is the basis for life. It's almost everywhere.

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All this forms a beautiful circle of carbon. That reminds me of...