COVID 19 became part of our lives as a global pandemic in March of 2020. Since then, scientists have tracked the phenomenon of Long COVID, where symptoms have lasted well after the patient has recovered. University of Arizona medical professor Sairam Parthasarathy discusses the ongoing research into Long COVID and why so many questions about the disorder remain unanswered. Sairam Parthasarathy spoke with Tim Swindle, professor emeritus in Planetary Science at the University of Arizona.