Protesters from across New England hold signs during a rally against the possibility of so-called tar sands oil being piped in from Montreal, in Portland, Maine, U.S., on Saturday, Jan. 26, 2013. The Associated Press reported that environmental groups say plans are in the works to bring oil by pipeline from western Canada to Montreal and then to Portland. Critics say tar sands, or oil sands, oil is so corrosive, acidic and thick that it’s more likely to spill than conventional crude oil and that would put rivers, lakes and streams at risk in Maine, New Hampshire and Vermont, according to AP. Photographer: Bizuayehu Tesfaye/Bloomberg