Local organizations Hills Horizon and P.E.T.E. are hosting a Speaker Series and Concert on October 24th in Spearfish City Park to raise awareness about climate change and reducing carbon emissions to 350 parts per million. The events will include speakers, live music, snacks, and a march to the base of Lookout Mountain where participants can hike and display a banner reading "350". Hills Horizon and P.E.T.E. have joined the international goal of reducing carbon dioxide levels to 350 ppm, as research shows this is the highest safe level to avoid dangerous climate change. Their event will help raise awareness and participation in the global effort to reach an agreement to reduce emissions at the United Nations climate conference