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As coronavirus has quickly spread across the world, so too has the use of face masks. During a pandemic, putting on a mask may be the first thing you think to do in order to protect yourself. But public health researchers have no concrete evidence yet that masks alone significantly reduce a healthy person’s chances of getting sick.And if healthy people buy and use up large quantities of masks, there won't be enough for sick people, who are mostly likely to spread the disease, or for frontline health workers, who more frequently come into contact with the COVID-19 virus as they care for the severely ill. Experts estimate health care systems in the US will need 3.5 billion masks -- quite a bit more than than the national stockpile of about 42 million. But if every person in the U.S. were to wear one mask each day, we'd need a supply nearing 10 billion for just one month. "The most important use of masks is for our health care workers," Dr. Tom Frieden, the president and CEO of Resolve to Save Lives and former head of the Centers for Disease Control and Prevention, tells Newsy. "That will protect them, so they're there for us. And it will protect other patients as well, preventing them from getting infected."The CDC only recommends that people who are sick and their caregivers wear masks. When masks are unavailable, a scarf or bandana can be used. But more importantly, Frieden urges sick people to just stay home. "If you're sick, don't go out. Don't expose others. Even if you're only mildly sick, your illness may kill somebody else." 1568

CAMDEN, N.J. — A woman in New Jersey was charged with first degree aggravated manslaughter for allegedly stabbing her identical twin sister to death.Amanda Ramirez, 27, was arrested and charged with stabbing and killing her identical twin sister, Anna Ramirez, at an apartment in Camden, New Jersey.Camden County Police responded to reports of an unconscious female at the Centennial Village Apartments in Camden at about 5:38 a.m. on Saturday, June 22. "Officers arrived and located the victim lying on the ground and it appeared that she had been stabbed," a 573

Anyone can take the lift to the top of the Shard tower to get great views over London, but one man decided to add some extra excitement to his visit.Eyewitness video shows a figure climbing up the outside of the 1,017-foot glass tower -- the European Union's tallest building -- on Monday, and local police say he did it without a harness.The Metropolitan Police said they were called at 5.15 a.m. local time after reports of a "free-climber" scaling the skyscraper."Emergency services attended and the man went inside the building where he was spoken to by officers," the police department 603

ANN ARBOR, Mich. — The University of Michigan says there is no "active threat to the community" after reports of a possible active shooter.Police have not given the all clear, but the university's division of public safety and security tweeted "UM ALERT UPDATE There does not appear to be an active threat to the community. DPSS continues to investigate. Continue to stay clear of area."They had previously issued an emergency alert Saturday evening for students on their Ann Arbor campus. 502

Artificial intelligence is being used by companies around the world, allowing many stories to go cashierless.Mike Fogarty, founder of Choice Market, says great food, service and quick check-outs are essential.“Currently, we have the ability for folks to order online on an app and use one of our self-checkouts back here,” Fogarty says. “We also have a traditional point of sale over here.”In six months, Choice Market plans to introduce a cashierless system using artificial intelligence technology.“Using cameras, sensors and other things within the store to monitor what’s being taken off the shelf, what a customer is walking out with, and ultimately, charging it to their credit card or the app,” Fogarty explains. However, Choice Market isn’t the only store doing this. Amazon Go stores are popping up across the country.“Many other retailers, including ourselves, are looking at this as a way to really enhance the customer experience,” Fogarty says. “And [in] my opinion, you will see this in almost every retailer in the very near future.”As far as jobs go, Fogarty says he doesn’t plan on letting any employees go once the new stores open. 1161

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