What does it mean to distribute a vaccine equitably?

California has made a commitment to distributing coronavirus vaccines equitably. NPR reports that some groups argue this means taking historical injustices into consideration. And the Guardian covers the debate over whether prisoners should be included in early distribution. Politico delivers good news: Some coronavirus vaccine vials hold extra doses that could expand the supply by as much as 40%. ProPublica and the New York Times Magazine take a deep dive into how Russia stands to benefit from a warming planet. The Atlantic is out with a piece about an uptick in Christmas tree purchases that seems to have caught the industry off guard.