The state of play: NASA doesn't allow the likenesses of its astronauts to be used in advertisements, and an agency spokesperson told Bloomberg it was unaware of the video until it had been posted.
The sought-after state of herd immunity — in which widespread outbreaks are prevented because enough people in a community are immune to a disease — is complicated by open questions about the effectiveness of a future vaccine and how COVID-19 spreads.
Why it matters: Unless a sufficient level of immunity is achieved in the population, the coronavirus could circulate indefinitely and potentially flare up as future outbreaks.
A weeklong campaign is highlighting the work of birders, conservationists and scientists who are black — and raising awareness about racism in the outdoors.
Why it matters: “Birding and having a relationship with the outdoors is something that every one should be a part of it. But when it comes to black people in America our relationship with the outdoors is complicated, it just is,” says Jason Ward, a co-founder of Black Birders Week.
