A What a difference a year makes. In 2020, discussing the hypothesis that Covid-19 originated in a Chinese lab could get your video yanked from YouTube. Many journalists dismissed such talk as a conspiracy theory, and many scientists insisted it was fake science. Now these assurances are falling apart. The latest domino fell on Wednesday, when President Joe Biden shared the results of an intelligence community inquiry into the origins of Covid, which found that most intelligence agencies “do not believe there is sufficient information to assess” whether the virus came from a lab leak...