It could be a big breakthrough: Oregon researchers have discovered that certain cannabis plant acids, can block the COVID virus from infecting human cells. I talked to Oregon State University's Richard Van Breeman, who is leading this research, about how he and scientists made this discovery: and what comes next, maybe a pill to stop COVID? His study appears in the Journal of Natural Products.

Next: what can we learn about this pandemic: from the lessons of another one: A.I.D.S. As a survivor of almost 18 years, Dr. Tyler TerMeer, like others with compromised immune systems, has to work hard to keep himself as safe as possible from the Omicron variant. He's the C.E.O. of the Cascade A.I.D.S. Project, which has served tens of thousand of people living with H.I.V. and A.I.D.S., and draws a link, between that fight, and the COVID battle.