A dentist, epidemiologist and NPR journalists answer listener questions on 'The National Conversation with All Things Considered,' NPR's nightly radio show about the coronavirus crisis. Excerpted here:- NPR's senior business editor Uri Berliner and epidemiologist Dr. Jennifer Nuzzo discuss reopening nonessential businesses- NPR's health policy reporter Selena Simmons-Duffin on the logistics of contact tracing- Dentist Dr. Suhail Mohiuddin on when a dental problem is urgent enough for an in-person visitIf you have a question, you can share it at npr.org/nationalconversation, or tweet with the hashtag, #NPRConversation.We'll return with a regular episode of Coronavirus Daily on Monday.This episode was recorded and published as part of this podcast's former 'Coronavirus Daily' format.