Wetter permafrost clings to carbon better

In 12-year lab study, moist soil samples released less greenhouse gas as they warmed

CARBON ON ICE  In a 12-year lab study, thawing permafrost saturated with water lost less  carbon than dry permafrost did (soil sample from Greenland shown).

B. Elberling

Frozen soil saturated with water hung on to more carbon while thawing than drier permafrost did in a long-term lab study.