National Health & Safety NIH Warns Data On Effectiveness Of Convalescent Plasma In Treating COVID-19 Is Weak 4:04pm August 19, 2020 by Joe Palca Health Medical Treatments National Share URL copied to clipboard! Copyright 2020 NPR. To see more, visit https://www.npr.org. 300x250 Ad More All Things Considered National You can sword-fight at this club. But no politics allowed Arts National In 'Wicked: Part I', Cynthia Erivo defies gravity — and convention — as Elphaba 300x250 Ad Support quality journalism, like the story above, with your gift right now. Donate