Science Health & Safety Contact Tracing Helps Scientists To Study The Ways The Coronavirus Spreads 3:45pm May 19, 2020 Science Health Share URL copied to clipboard! Play Pause There was an error loading the media player. Copyright 2020 NPR. To see more, visit https://www.npr.org. 300x250 Ad More All Things Considered Arts Prosecution and defense present closing arguments in trial of Sean Combs by Scott Detrow National What this term says about where the Supreme Court is headed by Scott Detrow 300x250 Ad Support quality journalism, like the story above, with your gift right now. Donate