A group of youth plaintiffs cheer after a press briefing outside the federal courthouse in Eugene after a hearing in district court. Olson is leading 21 youth between the ages of 9 and 21 are suing the federal government on constitutional grounds over climate change. The non-profit Our Children's Trust law firm of Eugene, Ore., is spearheading the ground breaking legal action. The case is on course to go to trail in federal court in Eugene in the fall of 2017. (Robin Loznak)