| President Trump tests positive, lawmakers consider new approaches to contact tracing and testing, and America's largest school districts navigate reopening. Here's what you should know: Headlines President Trump tests positive for Covid-19, and the country plans for an uncertain future Late last night, President Trump tweeted that he and Melania had tested positive for Covid-19. Hours earlier, the White House had announced that Hope Hicks, a trusted aide of the president, had also tested positive. The president has gone into quarantine with the first lady, and a memorandum from his physician noted that both are doing well. Still, everyone is wondering what will happen if he gets seriously sick, not least because three of the things known to make this disease riskier are being male, old, and overweight. Stocks have fallen since news of the president's diagnosis broke. Both Joe Biden and Mike Pence have tested negative, but tracing all of the president's contacts will be a Herculean task. This development throws into relief the president's refusal to take this virus seriously and the impact that has had on national planning, or lack thereof. Nine months after the first known coronavirus case in the US, researchers are attempting to put together a plan for a comprehensive, nationwide response in the absence of one from the federal government. And while numerous vaccines are in Phase III trials—a significant achievement in its own right—slight differences in trials and no head-to-head comparisons mean that there are still a lot of unknowns. Even so, as Anthony Fauci told WIRED's Steven Levy earlier this week, there is reason to be optimistic: "This outbreak will end." New developments in tracing, testing, and how to think about stopping the spread of Covid-19 Earlier this week, New York and New Jersey became the latest states to release voluntary contact-tracing apps. The apps protect users' privacy by identifying them with a random sequence of numbers that changes every few minutes, and they will notify people when they have been in contact with someone who's tested positive. There's still much to learn about how SARS-CoV-2 spreads, but nine months of epidemiological data have shown that it tends to spread in clusters. Some infected people barely spread it at all, while others are single-handedly responsible for soaring numbers. Thus far, contact-tracing apps haven't done much to stop the spread of Covid-19 in the US, as different states coordinate patchwork responses and the federal government doesn't weigh in. Of course, contact tracing of any kind can only be effective if tests are available and results are returned quickly. As many Americans continue to get test results back too late to be useful, a new House bill introduced by Mikie Sherrill (D-New Jersery) would increase federal reimbursements to labs depending on how quickly they turn around Covid-19 test results. The aptly named SPEEDY Act will offer graduated reimbursements for results coming back in 24, 48, or 72 hours, and won't pay at all for those that take more time. Bill Gates had suggested a similar plan in an interview with WIRED this summer. While it is well established that an effective testing apparatus is a prerequisite for getting this pandemic under control, ultimately the only thing that will stop the virus's spread is how people behave. America's largest school districts navigate the turbulence of resuming in-person classes The nation's largest school districts continue to grapple with whether and how to resume in-person classes. New York City schools entered the third and final phase of reopening yesterday as students in hundreds of middle and high schools reentered classrooms. The city plans to catch outbreaks by randomly testing students at each of its 1,800 public schools, a monumental operation that researchers say may still be insufficient. Schools will close if an average of more than 3 percent of people tested in the city are positive over seven days. and last week, the positivity rate passed that threshold for the first time since June. Meanwhile in Miami-Dade County, Governor Ron DeSantis threatened to withhold funding if classes stayed remote, and the school board plans to begin phased reopening next Monday, despite the concerns of both district teachers and board members. The district's school year was already off to a rocky start after a series of tech errors hobbled remote learning last month. And in California, most schools remain online-only in counties that don't meet certain metrics, but Governor Gavin Newsom has created a waiver system for elementary schools to reopen. In Los Angeles, a motion has been approved to use this system to open elementary schools that have a higher percentage of low-income families in the hopes of curbing achievement gaps that only grow wider with distance learning. Parents and the teacher's union have pushed back on this plan. Daily Distraction Newsletters have been trending lately thanks to platforms like Substack that make it easy for writers to generate income from subscriptions. But this isn't a new phenomenon. In the 1940s, journalists did the same thing. Something to Read Last month, genealogy company Ancestry's adjustment to its algorithm had an unexpected impact: A lot of people's "ethnicity estimates" suddenly told them they were more Scottish. The update underscores that ethnicity is hardly a scientific concept, least of all genetically determined, and the dangers of trusting consumer DNA companies tell us who we are. Sanity Check A new breathalyzer-like device says it can train you to track and boost your own metabolism. Maybe that sounds crazy, but the crazier part is, it kind of works. One Question How is this pandemic changing the ways we consume culture? Sheltering in place has caused what little hadn't migrated online yet to do so—and fast. Events have gone digital, and movies are released directly to streaming platforms, if they're released at all. And now that entering a library is a potential health hazard, ebook checkouts are way up. All of this means that these industries may look very different by the time offices and movie sets are able to fully reopen. Book publishers, for one, are concerned about the impact on sales. But on the plus side, by the time we're heading back into movie theaters, there's reason to believe that we'll be consuming a wider and more interesting array of movies than we were before. Covid-19 Care Package ❓ From social distancing to viral spread to staying sane, here's everything we know and advise about the coronavirus. 📦 The Covid-19 virus can linger on objects for as little as a few hours or as long as a couple of days, depending on the surface. Here's the research. 😷 If you're planning to go out in public anytime soon, you're going to need a mask. Here are the best ones you can buy, or how to make one at home. 🧼 It's not just your hands that need washing—your gadgets, clothes, and home need it too. Here's how to properly disinfect your stuff. 💻 Some of you are work-from-home pros, but if you're new to it, here's how to stay productive without losing your mind. 😔 It's hard not to be anxious about a global pandemic, but here's how you can protect yourself and your family without spiraling, and how to not hate the loved ones you're quarantined with. ✂️ It may still be a while before you can see your hairstylist, so here's how to cut your hair at home, plus other ways to keep yourself lookin' fresh. 🦠 Read all of our coronavirus coverage here. | 
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