Xinhua News Agency, Tianjin, August 11th (reporters Zhou Runjian and Cai Yugao) -- The astronomy societies of Tianjin and Jiangsu provinces announced that the world-famous Perseid meteor shower will streak across the sky from the evening of August 12th to the early morning of August 13th. During this time, 100-140 meteors per hour will streak across the zenith, and the public can observe them with the naked eye...