DAVOS, Jan. 20, 2016 (Xinhua) -- Founder and Executive Chairman of World Economic Forum (WEF) Klaus Schwab addresses the audience at the forum's annual meeting in Davos, Switzerland, Jan. 20, 2016. The leaders from various key sectors highlighted the 4th industrial revolution will be driven by renewable energy at the 46th WEF annual meeting, which kicked off on Wednesday in Davos-Klosters, Switzerland. (Xinhua/WORLD ECONOMIC FORUM/Remy Steinegger)