Storm damage and high temperatures have left 1.3 million homes and businesses in the eastern United States without power since Friday. At least 23 people have been killed, some crushed by falling trees, others from heatstroke. From Illinois to Virginia, “Many Fourth of July celebrations were canceled as local governments confronted damage from the hurricane-force winds and high heat and drought conditions that made firework shows risky.” There’s an intense image comparison here at the NASA website, showing before/after satellite images that reveal massive blackouts in DC, Richmond, and other cities affected by the “derecho” storms.