Ancient frozen carbon stores may cause vicious cycle of climate change

Ancient carbon stores from more than 50,000 years ago are being released into the atmosphere, which may fuel further global climate change. The new research finds that as Arctic regions warm, previously frozen ancient carbon, known as permafrost, is thawing and being released to inland streams and rivers. Once mobilised, aquatic microbes can efficiently ‘feed’ on this permafrost, releasing ‘old’ carbon dioxide into the earth’s atmosphere. Read more.