Firefighters are working to put out the fire at the explosion site in Tianjin, north China, Aug. 14, 2015. More than 1,020 firefighters and 140 fire engines are still battling the raging fire. The enormous blasts, which occurred late Wednesday night, killed at least 50 people, including 17 firefighters. A total of 701 were injured, of whom 70 still in critical condition. [Photo/Xinhua]