Sydney Morning Herald: THE ability of forests to soak up carbon dioxide is weakening, an analysis of two decades of data from more than 30 sites in the globe’s frozen north has found. The finding, published yesterday, is crucial because it means that more of the CO2 released by humans will end up affecting the climate in the atmosphere rather than being safely locked away in trees or soil. The results may partly explain recent studies suggesting the amount of CO2 in the atmosphere is increasing …