In the United States, people ages 65 and older and those who are immunocompromised can receive an additional dose of Covid-19 vaccine this spring. / STAT

A new low-cost Covid vaccine that doesn't require refrigeration provided immunity in rhesus monkeys for one year. / Stanford Medicine

The case for universal menstrual leave: "A right to rest is fundamentally a matter of gender equity." / Undark

A report finds smog and soot pollution continues to decrease across the US, but racial and geographic disparities are rising. / Grist

Most states have some version of a "castle doctrine," but can a doorbell ring justify a shooting? / The Associated Press

Related: "Stand your ground" laws are linked to an 8% to 11% increase in homicide rates, or roughly 700 additional deaths each year. / The Guardian

In New York City, police can now shoot GPS trackers at your car. / Jalopnik

A growing wave of Filipinos work remotely as virtual assistants to Silicon Valley entrepreneurs. / rest of world

Should artificial intelligence agents, when they perform productive work, be required to pay taxes? / Bloomberg

How to detect an "AI Business Influencer thread" on Twitter: At least one tweet likely contains the phrase "here's what you should know." / Read Max

See also: The AI Incident Database. / AID

One of today's more successful esports athletes is an Ohio mom who didn't know she was in a $250,000 Candy Crush tournament. / Kotaku  

For your weekly wanderlust: Photos from a woman's solo bicycle trip across Australia. / The Radavist

A new daily game asks you to identify a place in the US based on five photos. / The Pudding