Johnson & Johnson's Covid vaccine is only 66% effective at preventing moderate to severe illness, but appears to be 100% effective at preventing hospitalization or death. / STAT

Covid can trigger antibodies that attack a patient's own tissues—rather than the virus—in a condition that can persist long after the infection is over. / The New York Times

The first-known US cases have been detected of a highly contagious Covid variant first found in South Africa. / CNBC

To "undo the damage Trump has done," Biden signs executive orders to reopen the online nation's health insurance marketplace and to allow US funding for international groups that provide abortion counseling. / Reuters

Rep. Cori Bush: Those worried about the vaccine should talk to their medical provider—but millions of uninsured people don't have a medical provider. / Twitter

"I would prefer that somebody wore one mask properly than two masks improperly." How to double-mask the right way. / BuzzFeed News

The first ASL interpreter for the Biden White House press briefings is a member of Hands of Liberty, a right-wing group of ASL interpreters. / Time

Fresh from his escapades in destroying democracy, Mark Zuckerberg now wants Facebook to be a place where people "just have fun." / VICE

Ahead of its call on whether to reinstate Trump, Facebook's Oversight Board hands down its first set of rulings, overturning Facebook in four of the five cases. / NBC News

For America to recover from fascism, it must demand clear justice, invest in rebuilding, and transform societal norms. / Eudaimonia & Co.

One way Congress has changed dramatically since Biden was a member: attrition is on a major upswing. / The Washington Post

The iconic Cicely Tyson has died at age 96. / Variety

Why Trump probably won't get a presidential library: It's an expensive endeavor, and requires legal fundraising. / POLITICO

Trump's "Diet Coke button" is still in the Oval Office. It's officially called the "Usher Call," and it's now in a wooden case. / Boing Boing

As major songwriters sell off their catalogs, "what's at stake is nothing less than control of the popular music canon." / Pitchfork

Kris Kristofferson has now retired, and played his final concert last January. / Rolling Stone

See also: Kristofferson began his career by landing a helicopter on Johnny Cash's lawn. / Wide Open Country

"Books can have details you couldn't know to look for." Interested in having a rare book appraised? Start here. / Book Riot

Experience the joy of discovery by being the first to see photos of objects with zero views. (Find out more about the project here.) / Never Been Seen, It's Nice That

Watch: A supercut by David Friedman of people saying "David." / The Morning News

The first US funeral home offering "organic human reduction"—human composting—has finally opened. / Earther