From left: Climate Emergency Caucus organisers Ezra Silk, Shari Hrdina, Ed Fallon and Margaret Klein Salamon hold up a banner announcing Bernie Sanders as the winner of a model caucus on the eve of the first-in-the-nation presidential primary caucuses. Iowans showed their support for the presidential candidate they believe is best-suited to stop the Bakken Oil Pipeline and lead a full-employment, WWII-scale mobilisation to rapidly retire all fossil fuel infrastructure, drive the U.S. economy to net zero greenhouse gas emissions by 2025, and restore a safe climate for humanity.