Tammy Chen of Central Park Dental Aesthetics on dental problems during the pandemic. Daniel Jones of New York Times on modern love. Garvin Heath of National Renewable Energy Laboratory on solar panel disposal. J. Tod Olin of National Jewish Health on asthma-like condition Exercise-Induced Laryngeal Obstruction or EILO. Peter Fretwell of the British Antarctic Survey on Emperor Penguins. Chelsea Wood of Univ of Washington on the campaign to save the parasites.