Science Health & Safety COVID Cases Finally Are Falling. Experts Worry Variants Could Erase That Fast 8:01am February 06, 2021 by Rob Stein Science Health coronavirus variant Share URL copied to clipboard! Copyright 2021 NPR. To see more, visit https://www.npr.org. 300x250 Ad More Weekend Edition Saturday World News Chileans weigh a new constitution by Scott Simon Sports Saturday sports: Serena Williams' dramatic U.S. Open by Tom Goldman 300x250 Ad Support quality journalism, like the story above, with your gift right now. Donate