InsideClimate: U.S. oil production is suddenly growing so fast that some analysts are questioning how much the country really needs the Canadian tar sands oil that would move through the proposed Keystone XL pipeline. This month, the U.S. Energy Information Administration (EIA) said it expects domestic crude oil production to surge 20 percent by the end of 2014 from its level at the start of this year. That means an additional 1.4 million barrels of U.S.-produced oil will be available each dayabout twice as much...