News Worlds collide: Trump, Thunberg at Davos U.S. President Donald Trump and 17-year-old Swedish activist Greta Thunberg seemed to be talking about two entirely different planets at WEF in Davos. By Arete News - January 21, 2020 World Economic Forum participants watching U.S. President Donald J. Trump speak on January 21, 2020 (AN/Benedikt Von Loebell) You need to login to view this content. Please Login. Not a Member? Join Us