From Bob Park’s newsletter:
BALANCE: CLIMATE FEEDBACK MAY NOT BE AS BAD AS THOUGHT.
One of the global warming nightmares is that thawing permafrost might release methane, a potent greenhouse gas. This positive feedback would accelerate warming. A group led by M. Turetsky of Michigan State found that new plant growth in thawing Canadian peat bogs more than offset the release of methane. [more]