Green Building Elements : a part of Green Options Media
Urbanworkbench : interesting husband-wife civil engineer team committed to green design
WorldChanging : my top resourced site overall
Inhabitat : green urban chic by some really hot & green urban chicks...(now is that doubly hot or wut - I'd take any one of them)
You can also just troll through my del.icio.us tabs, I tag all I find worthy.