Democratic presidential candidate Bernie Sanders calls climate change the greatest threat to national security. Front-runner Hillary Rodham Clinton promises to install more than 500 million solar panels across the country.

On the Republican side, Jeb Bush would phase out tax credits for solar power. Rival Marco Rubio wants to cut the federal gas tax by 80 percent.

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The head football coach of Greene County High School was arrested this week, according to the GBI. (Oscar Guevara Saenz for the AJC)

Credit: Oscar Guevara Saenz

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Waymo autonomous vehicles operate across 65 square miles inside I-285 and have been involved in six incidents with Atlanta Public School buses since May. Waymo issued a recall because of their cars briefly stopping or slowing down before continuing forward while a bus was stopped and flashing its lights. (Courtesy of Atlanta Public Schools)

Credit: Courtesy of Atlanta Public Schools