The Twitter Account to Watch If You're Worried About Climate Change

The planet’s rising atmospheric CO2 levels may hit a symbolic milestone this month.

http://www.technologyreview.com/view/514496/the-twitter-account-to-watch-if-youre-worried-about-climate-change/?utm_campaign=newsletters&utm_source=newsletter-weekly-energy&utm_medium=email&utm_content=20130506