Climate News Network: The Arctic permafrost thaws each year, but to the surprise of scientists from Denmark in some areas it is not releasing the carbon dioxide it contains nearly as fast as they had expected. LONDON, 28 July Think of permafrost as a slush fund of so-far uncertain value. The levels of Arctic permafrost that thaw each year and freeze again are growing at depths of 1cm a year, but the carbon locked away in the soils is so far not being released at an accelerating rate. This is good news for...