(April 19, 2018, 2:03 PM EDT) -- BOULDER, Colo.— Two municipalities in Colorado and the city of Boulder on April 17 sued Exxon Mobil Corp., Suncor Energy (USA) Inc. and two of its subsidiaries in Colorado state court, contending that the companies failed to disclose to consumers their knowledge that burning fossil fuels contributes to global warming and climate change (Board of County Commissioners of Boulder County, et al. v. Suncor Energy [USA] Inc., et al., No. n/a, Colo. Dist., Boulder Co.)....