World

Detecting COVID-19 symptoms and self-quarantining are good for preventing sick people from spreading the coronavirus. But mounting evidence suggests that symptom-free people are also spreading the virus. Monica Gandhi, an infectious disease doctor and researcher at the University of California, San Francisco, explains what is known about the asymptomatic spread …

Jeenah Moon / Getty Images A Western Conference playoff team reportedly had four positive tests for COVID-19 in the past few weeks. ESPN’s Adrian Wojnarowski did not identify the team but noted that the teams are “preparing for a significant number of positive tests “as players return to their home …

Playing now: See this: Apple presents Messages for iOS 14 with the new Memoji 3:05 Apple is bringing changes to the messages. Screenshot Apple announced a wide range of changes for the next version of its iPhone software, iOS 14, Monday during their annual World developer conference. Among them are …

An increase in coronavirus cases in the US USA And Brazil, and new outbreaks in Germany, where the disease’s rate of reproduction has increased substantially, worry global health experts, but international financial markets don’t seem too concerned. The largest single-day increase in global coronavirus cases was on Sunday, according to …

Researchers have detected artificial mercury contamination at the bottom of the Mariana Trench, the deepest ocean trench on the planet. A team of scientists identified methylmercury, a toxic form of mercury that easily accumulates in some animals, in fish and crustaceans that live in the ditch, which reaches depths of …