09 NOVEMBER 2019 - DES MOINES, IOWA: US Senator BERNIE SANDERS (I-VT) speaks at a climate change town hall organized by Sanders' presidential campaign. Sanders and Rep. Alexandria Ocasio-Cortez hosted the "Climate Crisis Summit" at Drake University in Des Moines. More than 2,000 people attended the event. Sanders, an independent, is running to be the Democratic nominee for the 2020 US Presidential election. Iowa holds the first in the country selection contest with state caucuses on Feb. 3, 2020. PHOTO BY JACK KURTZ