Bloomberg: The super-political action committee financed by billionaire and former money manager Tom Steyer will try to raise climate change as an election issue in four U.S. Senate races and three gubernatorial contests this year, the group announced this morning. NextGen Climate Action Committee had raised $9.3 million through the end of April to spend on 2014 elections almost all of it from Steyer himself, U.S. Federal Election Commission reports show. Steyer, whose net worth is $2.6 billion, founded...