Chasing Plagues
A virologist crawled through bat caves to find the origins of the SARS-CoV-2 virus

Fast-Track Drugs
With no time to make treatments from scratch, scientists are searching for existing compounds that reduce harm

Frontline Trauma
Stress from fighting COVID-19 poses an unprecedented threat to health care workers

How the Healers Feel
Interviews by Jillian Mock and Jen Schwartz

The Vaccine Quest
Only genetic engineering can create a protective serum in months rather than years

What Comes Next
Large outbreaks of disease in the past suggest how the current crisis might play out