TreeHugger, one of the most popular sites in the green blogosphere, covers the nexus of green and cool. They cover green tech, cars, science, design, building and fashion, and their huge stable of writers churn out more than 30 posts a day. TreeHugger is big, prolific, and it sets the standard for coverage of cutting-edge green information.
What pro blogger Bryan Nelson thinks about TreeHugger: "TreeHugger ... was the first green blog that I began following religiously several years ago, and it's still at the cutting edge of picking up the most viral stories and giving some of the best advice online on how to go green. They serve as a model for how to balance news with activism, advice and wit — which is that rare combination I look for in a blog."