Every day, the same, again
Scientists Say You Can Cancel the Noise but Keep Your Window Open — Researchers in Singapore have developed an apparatus that can be placed in a window to reduce incoming sound by 10 decibels. […] The prototype is not yet the most practical device in real world conditions, but it points the way toward the development of technologies that may help ease the strain of noisy city living. Borrowing from the same technological principles used in noise-canceling headphones, the team expanded the concept to fit an entire room by placing 24 small speakers in a window. The speakers emit sound waves that correspond to the incoming racket and neutralize it — or, at least some of it. [NY Times]
What Miniature Lab-Grown Brains Reveal About the Effects of Covid-19 […] Known as “mini brains,” or organoids, these minuscule structures made from stem cells contain neurons that spontaneously emit electrical activity as a real brain would. […] What she found was that the virus could infect the mini brains and, 72 hours later, it began multiplying inside them, suggesting that human brain cells are susceptible to the virus.
If SARS-CoV-2 is airborne—which basically means tiny viral particles can survive air for at least a few hours and still infect people—it’s far from the only disease. Measles is notorious for being able to last in the air for up to two hours. Tuberculosis, though a bacterium, can be airborne for six hours, and Lisa Brosseau, a retired professor of public health who still consults for businesses and organizations, suggests that coronavirus superspreaders (people who seem to eject a larger amount of the virus than others) disseminate the virus in patterns that recall the infectiousness of tuberculosis. The evidence that this type of transmission is happening with SARS-CoV-2 arguably already exists. Several big studies point to airborne transmission of the virus as a major route for the spread of covid-19. [Technology Review]
Extrapulmonary manifestations of COVID-19
Immunity to covid-19 may be short-lived, according to a new longitudinal study of people who have caught the disease and recovered. Like other coronaviruses, covid-19 could reinfect people repeatedly.
The Math of Social Distancing Is a Lesson in Geometry
Hundreds of hyperpartisan sites are masquerading as local news
Post Office Delivery Trucks Keep Catching on Fire — approximately one every five days since May 2014
