A scientist and a philosopher answer listener questions on 'The National Conversation with All Things Considered,' NPR's nightly radio show about the coronavirus crisis. Excerpted here:- Aerobiologist Joshua Santarpia) discusses disinfectants.- Professor David Chan) talks through the day-to-day ethical dilemmas during the pandemic.)If 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.*Learn more about sponsor message choices: podcastchoices.com/adchoices)NPR Privacy Policy)