On Tuesday, activists targeted five pipelines carrying crude oil into the U.S. from Canada, as construction resumed on a North Dakota pipeline. Twenty-seven protesters were arrested.
Members of the Standing Rock Sioux Tribe vow to continue their protest against an oil pipeline under construction in North Dakota. They're preparing for a long, cold winter.
The U.S. Army Corps of Engineers says it's OK with a short pause while a federal court decides whether the Corps followed proper procedure in authorizing the pipeline's construction and operation.
Private security guards used dogs to try to disperse demonstrators, who say the four-state, $3.8 million Dakota Access Pipeline could affect sacred sites and their drinking water.