A laboratory leak is the only COVID-19 origin theory supported by evidence, a former intelligence official testified on April 18.
“A lab leak is the only explanation credibly supported by our intelligence, by science, and by common sense,” John Ratcliffe, the director of national intelligence during the latter portion of the Trump administration, told a congressional committee in Washington.
Some scientists and other experts say the bulk of available evidence indicates COVID-19 started at a set of laboratories in China where scientists had been experimenting with bat coronaviruses in the years leading up to the emergence of the illness. The laboratories are located in Wuhan, where the first COVID-19 cases appeared….