Twitter digest 2011-07-09 Posted July 9, 2011 by hil A graphic that explains how carbon pricing works: http://t.co/MhZjF80 # Share thisClick to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Tumblr (Opens in new window)Click to email a link to a friend (Opens in new window)Click to print (Opens in new window)