Green news behind the fold

Natl Geographic reports that bogs emitting methane might have contributed to global warming in the past...

Warm, wet weather likely accelerated the rotting of plant material, which in turn triggered the methane burps from the Cobham Lignite bog, the researchers said.
Assuming that other wetlands responded in a similar way, such large amounts of methane could explain the extreme global warming seen at the time.

The reason I point this out is that many think that rice paddies, which rely on manure and rotting vegetation as fertillizer, and are kept under water (not stagnant but running water) to keep down the weeds also contribute to global warming.