• Sarah Palin's Washington Post editorial slamming cap-and-trade gets bashed on Switchboard (here and here), Grist, Climate Progress, The Atlantic and Vanity Fair. 
•  "Carbon footprint" and "locavore" added to Merriam-Webster's dictionary.
• Fast Company calls for a universal standard  for measuring and comparing "greenness" of products.
• Yahoo says it will stop buying carbon credits and instead focus on reducing its greenhouse gas emissions.
• The United States and China announce plans for a joint clean energy research center.
• Wal-Mart creates comprehensive sustainability index of every product it sells.
• Obama administration approves first roadless logging contract in Tongass National Forest.
• Two Middlebury College students write citizen's guide to climate policy.
• Coal ash spill site doesn't make EPA hazard list (more on Switchboard).
• Pickens to sell off 667 wind turbines.
• Study suggests that global wind energy potential is considerably higher than previously thought.
• Spy satellite sea ice images made public.
• Hybrid2 public bike concept promises to help power city buses.

Think I missed anything really great? Feel free to share it in the comments section. Want news updates every day? Check out my colleague Ben Jervey's blog on Greenlight.