An unexpected second wave of the virus has hit Manaus, Brazil—and brings with it new worries about reinfection. Staff writer James Hamblin explains to producer Katherine Wells what’s going on there and what it could mean for the rest of the world.

Editor’s Note: The Atlantic is making vital coverage of the coronavirus available to all readers. Find the collection here. The good news in COVID-19 data continued this week, as new cases, hospitalizations, and deaths all dropped. For the seven-day period running January 28 to February 3, weekly new cases were down more than 16 percent over the previous week, and dropped below 1 million for the first time since the week of November 5.

In the original Star Trek series, there was an episode in which M-5, a revolutionary computer created by Dr. Richard Daystrom, is designed to handle all ship functions without human assistance.It’s thought to be an impressive achievement—until M-5 takes total control over the USS Enterprise and begins to attack other Federation ships. Captain Kirk tells Daystrom to disengage the M-5 unit, but it proves to be impossible.

Since Josh Hawley was a young man, powerful people have told him he was special. His teachers gave him the “Special R” award, just one feather in the Rockhurst High School valedictorian’s cap of outstandingness. Hawley’s mentor at Stanford, David Kennedy, took a shine to him just weeks into his freshman year, and came to see him as possibly the most gifted student he ever taught.