Astronomers have been waiting eagerly for the beginning of the powerful space observatory’s mission, and on Christmas morning they may finally get their wish.
Feb. 26, 2021 The C.D.C. is urging communities to reopen schools as quickly as possible, but parents and teachers have raised questions about the quality of ventilation available in public school classrooms to protect against the coronavirus. We worked with a leading engineering firm and experts specializing in buildings systems to better understand the simple steps schools can take to reduce exposure in the classroom. Here’s a typical classroom from the pre-Covid era with about 30 students. This scene is based on a real public school classroom in New York City. New York City put strict protocols in place for reopening schools, and in-school transmission of the virus has been very low. Students must practice social distancing and wear masks, and classrooms must have windows that open.