Sports It's Impossible To Guarantee That The Rio Games Will Be Drug Free 5:05am July 20, 2016 Sports Commentary Share URL copied to clipboard! Copyright 2016 NPR. To see more, visit NPR. 300x250 Ad More Morning Edition National Education Columbia cancels in-person classes after some students say they don't feel safe Justice Department is being urged to protect researchers testing AI platforms by Jenna McLaughlin 300x250 Ad Support quality journalism, like the story above, with your gift right now. Donate