What the Earth's frozen burps tell us about global warming | for every 1C of warming, the Earth’s plants and soils – the “terrestrial biosphere” – will add carbon dioxide to the atmosphere to the tune of about 20 parts per million.

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What the Earth's frozen burps tell us about global warming | for every 1C of warming, the Earth’s plants and soils – the “terrestrial biosphere” – will add carbon dioxide to the atmosphere to the tune of about 20 parts per million.