InsideClimate News: There will be a lot on the line in a few weeks when Enbridge Inc. hits the start button on its new 6B oil pipeline across southern Michigan. The company is banking on the line to more than double the amount of oil it pumps from Griffith, Ind., to Sarnia, Ontario, Canada. Residents along the pipeline's 285-mile path also have a stake in the project. They're counting on it to be safer than the old 6B that it replacesthe one that spilled more than a million gallons of oil from Canada's tar sands...