McClatchy Newspapers: If the Senate doesn’t pass a bill to cut global warming, Democratic Sen. Barbara Boxer says, there will be dire results: droughts, floods, fires, loss of species, damage to agriculture, worsening air pollution and more. She says there’s a huge upside, however, if the Senate does act: millions of clean-energy jobs, reduced reliance on foreign oil and less pollution for the nation’s children. Boxer is engaged in her biggest sales job ever. The stakes couldn’t be higher as she …