Editorial: President Biden is right to order a definitive review of the COVID-19 ‘lab-leak’ theory

We don’t yet know where the virus that causes COVID-19, the disease that’s killed nearly 600,000 Americans and 3.5 million globally, came from. SARS-CoV-2 may well have crossed over from a wild animal in an unsanitary wet market in or around Wuhan, China. Or it may have emerged from a lab in that city of 11 million where scientists were studying bat coronaviruses.