Some countries reopened schools. What did they learn about kids and Covid?

PLUS: Sex difference in the brain, a helicopter ride over mars, and a hack of Facebook's own AI. View this email in your browser  |  Manage newsletter subscriptions  07.27.20   NEUROSCIENCE A Study Finds Sex Differences in the Brain. Does It Matter? BY GRACE HUCKINS The NIH research connecting anatomy and sex chromosomes could shed light on mental disorders. But the topic is sensitive, and such findings are easy to misuse.   FIRST IN FLIGHT A Helicopter Ride Over Mars? NASA's About to Give It a Shot BY DANIEL OBERHAUS "I see it as kind of a Wright brothers moment on another planet," says the project's chief engineer at JPL.   PLAYING DEFENSE Facebook's 'Red Team' Hacks Its Own AI Programs BY TOM SIMONITE Attackers increasingly try to confuse and bypass machine-learning systems. So the companies that deploy them are getting creative.   PUBLIC HEALTH Some Countries Reopened Schools. What Did They Learn About Kids and Covid? BY ERIC NIILER Studies from around the world suggest that success depends on class size, distancing, the age of the students, and how prevalent the virus is locally.   PARTNER CONTENT Listen and Subscribe to The Pitchfork Review Pitchfork's new podcast is for the music obsessed, the music curious, and everyone in between. Check out The Pitchfork Review, and hear music differently.   DRY RUN I Found the One Sweatband to Rule Them All BY PARKER HALL After decades of running with water running down my face, this workout headband let me see clearly.   PRODUCT REVIEW OnePlus' Nord Is an Affordable Phone with Six (Good) Cameras BY JULIAN CHOKKATTU There's only one direction this phone's heading, and it's not south.   GET WIRED PODCAST The Centuries-Long History of Racism in Surveillance Tech BY LAUREN GOODE This week's Get WIRED podcast traces how innovators' biases helped design slave ships, the panopticon, and facial recognition.   BUYING GUIDE The 12 Best Headphones and Earbuds for $100 or Less BY PARKER HALL AND MICHAEL CALORE You could probably fill one of the empty football stadiums with all the cheap headphones out there. We're here to help you pick the right pair.     This e-mail was sent to you by WIRED. To ensure delivery to your inbox (not bulk or junk folders), please add our e-mail address, wired@newsletters.wired.com, to your address book.   View our Privacy Policy Unsubscribe or Manage your newsletter subscriptions