US Climate Agency Sees 'Dramatic Changes' in the ArcticWashington, 11 Dec (ONA) --- The Arctic tundra has stored carbon dioxide in the frozen ground and in trees for thousands of years, but now a new report has found that it is releasing more planet-warming CO2 into the atmosphere than it absorbs. The reason for this, according to the report by the US climate agency NOAA, is rising temperatures and more frequent forest fires. The report was co-authored by 97 researchers from 11 countries. It said that over the past 20 years, wildfires in the northern polar region have ...