The Obama administration has rejected the Keystone XL tar sands oil pipeline that would stretch from the Alberta tar sands in Canada to the Gulf Coast. On Wednesday, President Obama said he was turning down TransCanada’s application for the pipeline because there was not enough time to review an alternate route that would avoid the Ogallala Aquifer in Nebraska. Obama had tried to delay a decision until next year, but Republicans responded by passing legislation forcing a decision by the end of February. Environmental groups have hailed the permit’s rejection, but it does not mark the end of the pipeline fight. TransCanada has already announced it will reapply for a permit based on a different route, and Obama said he was only making his decision based on time constraints, not on the pipeline’s “merits.”