RSS Feeds of good sites to read:
This Green Life - Not an RSS feed (yet), but a good read nonetheless. A regular series of articles on everyday choices you can make.
Adam Brock's Wild Green Yonder blog is a nice collection of stories and analysis from a sustainability perspective.
Treehugger
Sustainable Style
Grist
WorldChanging
Inhabitat
Afrigadget
A collective blog about technological solutions to local problems originating in various parts of Africa.
Plenty
Solar Rollers hope to teach teenagers to love solar energy, one race at a time. 
This DIY lighting project is a great way to learn about a thermoelectric system. Using a few supplies like food tins and tea candles, you can light some LEDs!
Today is World Turtle Day and we want to bring attention to these beautiful, unique, and sometimes odd critically endangered species. 
Earlier this month, our atmosphere crossed an important - and potentially dangerous - milestone. Here's some context provided by some of NASA's climate scientists.
"Here you have a manatee just swimming down a canal not hurting anyone. To actually go out of your way to harm them, what would make you want to do that?"