How are the Chinese trying to reduce air pollution?

Answer: by spraying water from the top of tall buildings

by / January 31, 2014
080421-N-1251W-006 PACIFIC OCEAN (April 21, 2008) Damage Controlman Fireman Christopher Tornay shouts commands at Aviation Boatswain's Mate (Handling) 2nd Class Bryan Egolf during fire hose handling training on the foc'sle of the guided-missile destroyer USS Lassen (DDG 82). U.S. Navy photo by Mass Communication Specialist 3rd Class Matthew R. White (Released) U.S. Navy

Spraying water from buildings can help to reduce the concentration of tiny particles in the air in as quickly as 30 minutes. Researchers plan to test their idea at Zhejiang University campus first, and then in Hangzhou City. The researchers cited the idea as cheap to deploy and highly effective.