Earth Day Links

I've added links to some fun/informative sites for Earth Day. Just getting in under the wire but most of them are about things we can do all year. I've also added a new blog to my roll "Hazard Hot Sheet". It covers threats to our environment. I've found Bob Carlson's posts informative and he backs up his arguments with science and links to sites with additional information. He writes under the name Green Knight. It makes me think of an armour clad horseman riding out to joust in the cause of nature.