South Korean Tennis Player Defeats His Idol, Novak Djokovic
Amazon Go: First Store with No Money or Lines
Syria, Russia Accuse US of Lying about Chemical Weapons Attacks
Russian-Linked Twitter Accounts Not Done with US Government Shutdown
Report: US Is Largest Source of Illegal Guns in Brazil.
US Government To Reopen After Three Day Shutdown.
Artificial Intelligence Beats Humans in Major Reading Test
Most Large US Public Colleges Fail to Keep Records on Suicides.
Indian Scientists Invent Nose Filter to Protect Against Air Pollution
Scientists Discover a Dinosaur with Shiny, Color-Changing Feathers.