The Aerosol Conundrum, and What It Might Tell Us About Herd Immunity

Chicagoans have one thing in common: we do not, in the balmy days of mid-summer, feel nostalgic for February. So chalk up another tally on the register of ways 2020 has changed everything: we’d all merrily transport ourselves back to that naïve era when the coronavirus was a thing in China but not a scourge that would turn our lives upside down.