The Environment: A Global Challenge is put together by students and is great for students and educators.
The Chemical Scorecard.  Enter your zip code and find out who's polluting your community.
The Rachel Page has news and resources on environmental justice.  Subscribe to her newsletter for great updates and interesting perspective on current issues.  I get this newsletter and it really sheds light on what's going on in the world today, environmentally speaking.
Hog Watch is a source for information and action on industrial hog farming in North Carolina.  Hogs in NC produce over 50,000 tons of waste a DAY, which is polluting the water supply, not to mention literally causing a stink for the farms' neighbors.  Send email to key NC legislators from this web site.  And remember:  every time you eat pork, you're a part of the problem.
Anti-recycling myths. It's not just about landfill space.
Composting combines yard waste and kitchen scraps. In a few weeks, these materials compost into a very rich fertilizer. Great for gardens!
Jigeemu.com has lots of info on recycling and energy.