Reuters: In a big win for environmentalists, the Democratic governor of Kansas on Friday vetoed legislation that would have allowed a huge coal-fired power plant to expand in the state and spew 11 million more tons of greenhouse gas emissions a year. The bill, approved by the Republican-dominated Kansas legislature, would have allowed Sunflower Electric Power Corp to add two 700-megawatt units at a facility in western Kansas. Under the bill, lawmakers sought to strip the authority of …