Podcast:Short Wave Published On: Mon Mar 24 2025 Description: Early in the beginning of the COVID-19 pandemic, scientists predicted the SARS-CoV-2 virus would mutate slowly. They were wrong. Hundreds of thousands of viral mutations and multiple seasonal waves later, we now know why. The answer changes researchers' understanding of viral evolution — and it could help predict the evolution of other viruses in the future. Emily talks about it all with Sarah Zhang, a health writer for The Atlantic. Want to hear more virology or human biology stories? Let us know by emailing shortwave@npr.org.See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences.NPR Privacy Policy