Moscow: Masks cover smiling faces

On August 6, in Moscow, Russia, people wearing masks and covering their mouth and nose with handkerchiefs talked to each other. In the past few days, smoke from many fire spots near Moscow drifted over the city. The top of many high-rise buildings in the city is covered with smoke, and even the subway can smell smoke. Moscow government officials recently warned that the concentration of toxic particles in the air is much higher than the safe level, and residents should take precautions to stay at home as much as possible. Xinhua News Agency/Reuters