Greenwire: A billionaire environmental activist from California will launch an effort to quantify what inaction on climate could cost the country, a study that could land just before the 2014 election.
Tom Steyer, a Democrat who's twice succeeded with efforts on California ballot measures, said the move is needed to shift the dialogue on climate and "try and systematically and rigorously quantify what it will mean to move into a new energy economy, and what it will cost not to do it."
"We should address...