In Nebraska, about 100 protesters rallied at the Capitol in Lincoln Sunday, calling on their state to deny a permit allowing the company TransCanada to build the Keystone XL pipeline. The protest came ahead of a crucial meeting today at Nebraska’s Public Utilities Commission on whether to allow construction of the expanded Keystone pipeline, which opponents say threatens to pollute Nebraska’s Ogallala Aquifer while driving greenhouse gas emissions from oil extracted in Canada’s tar sands region.