Greta Thunberg has been named Time magazine's Person of the Year. The 16-year-old Swedish climate change activist is the youngest person to receive the title. Time editor-in-chief Edward Felsenthal revealed the news Wednesday. Time selects their winners based on “who influenced the years' events most, for better or for worse.” This year’s shortlist included Nancy Pelosi, The Whistleblower, the Hong Kong protesters and Donald Trump.