On July 15, about 100 firefighters battled a 2,000-acre wildfire in Canton, Oklahoma, as residents of the state were warned of “dangerous heat.” This image by Aaron Spencer shows a view of the fire burning on Friday. KOCO 5 News reports that the fire, which is believed to have been caused by a solar bottle, started on Thursday and spread to 2,000 acres by Friday. One firefighter was sent to the hospital due to heat exhaustion, he said. A heat advisory was in place until 8 a.m. Saturday, with temperatures forecast to reach 108 degrees Fahrenheit (42 Celsius). Credit: Aaron Spencer for the story