As American states weigh the possibility of reopening services in the face of the covid-19 pandemic, the demand for contact tracing—helping track down and isolate potential carriers of the virus—will get even larger. We spoke to people working as contact tracers across America to understand what it’s like, what they’re seeing, and what might be

This weekend I’m going to break my isolation for the first time in two months. Aside from occasional socially distanced bike rides and walks in the park with a handful of trusted friends, I haven’t spent time with anyone, much less touched anyone beyond a hasty (and sleeved) elbow bump. But now I’ve agreed with

The news: A 25-minute clip of an upcoming documentary featuring a well-known anti-vaccine conspiracy theorist was viewed millions of times this week on social media, before Facebook and YouTube pledged to remove copies of it from their platforms. On Thursday, Facebook told reporters that the documentary violated its policies by promoting the potentially harmful claim

The world has never seen anything quite like Aarogya Setu. Two months ago, India’s app for coronavirus contact tracing didn’t exist; now it has nearly 100 million users. Prime Minister Narendra Modi boosted it on release by urging every one of the country’s 1.3 billion people to download it, and the result was that within

As the covid-19 pandemic rages, technologists everywhere have been rushing to build apps, services, and systems for contact tracing: identifying and notifying all those who come in contact with a carrier. Some are lightweight and temporary, while others are pervasive and invasive: China’s system, for example, sucks up data including citizens’ identity, location, and even