A man crosses a street in the rain at the commercial district at Houjie town on January 26, 2016 in Dongguan, China. Researchers are attempting to address the country's water issues by building a massive rain-making network three times the size of Spain. (Lam Yik Fei/Getty Images) At a Glance Researchers in China want to build a massive weather-altering network in the Tibetan mountains to produce more rain.It would be made up of machines that create silver iodide particles that...