As the Earth warms and glaciers all over the world begin to melt, the natural concern has been how all of that extra water will contribute to sea level rise. Less considered is what happens to all of the organic carbon found in those glaciers when they melt. A new paper estimates what could happen if major ice sheets break down.

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Photo credit: Icebergs break off from the Glacier into the Lagoon at Jokulsarlon, Iceland / Ryan Taylor.