Grist!

http://www.grist.org/

Since 1999, based out of Seattle, Grist Magazine has been trying to combine humor and environmental news. It seems like an oxymoron, but actually it's great. The stories are all on point and they really are funny! They even have a "Clarity-O-Meter" that draws the real meaning from breaking green stories. Just like any other magazine, their website is divided up into segments, like politics, food, living, and business, except their content is consistently edgy, provocative and relevant!