Climate Central: Earth's subterranean carbon blisters are starting to pop.
Carbon inside now-melting permafrost is oozing out, leaving scientists scrambling to figure out just how much of it is ending up in the atmosphere. Whether recent findings from research that attempted to help answer this question are good or bad climate news might depend on whether you see an Arctic river basin as half full of mud -- or half empty.
Frozen soils known as permafrosts can be found across the planet, and they're concentrated...