After having been in denial for some time, the oil firms are now at wit’s end, it seems. For years, they denied that any warming was underway at all. Then when some of them finally admitted it, they said, inaccurately, that scientists were still “unsure” of the cause.... CHICAGO — California is no stranger to rolling blackouts. When Charles and Elke Hewitt installed a solar electric system with batteries for emergency backup power on their home this April, they were shocked when Southern California Edison rejected their application... 