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Within hours of the school shooting in Broward County, Florida, computer experts discovered pro and anti-gun control tweets that appear to be linked to Russian bots.A bot is a computer program written to execute a series of commands that can, for example, post many tweets across many accounts nearly instantly.Some posts discovered by computer experts, and highlighted in stories on tech websites and The New York Times, were pro-gun control. Others were in support of gun rights. Experts familiar with the M.O. of other countries' fake tweets say taking sides isn't the point."I think disruption is really what they are going for. I think anytime that you can throw doubt or cast doubt and chaos into -- not just a nation -- but an ideological structure," said Sam Jay, a Metropolitan State University of Denver professor of Rhetoric.Jay said countries who post fake tweets in numbers such as those seen after the shooting in Florida like it when Americans are confused."Then it's quite easier to manipulate a much larger decision-making process such as elections," Jay said.Twitter found and removed thousands of fake accounts after the 2016 presidential election, the company said. Facebook turned over some 3,000 fake ads to Congress."So essentially what any person can do, a program (bot) can do. And of course the programs can do it so much more rapidly and have a much wider spread," said MSU Denver Computer Science professor Steve Beaty.Bots were also active during the controversy surrounding NFL players taking a knee during the national anthem to protest police brutality.Bots posted tweets using opposing hash tags like #boycottnfl or #takeaknee.Beaty said computer science researchers estimate 10 percent of tweets posted are not from real people or don't contain real information.On the low end, it’s estimated 6,000 tweets are sent every second. That works out to half a billion a day.Doing the math means there are more than 51 million fake tweets every day "A Twitter bot won't go through a web page. It won't actually go through Twitter's own application. It will go directly to the software behind Twitter," Beaty said.Beaty said determining what is a fake tweet or a tweet from an account that isn't a real person isn't impossible."See what else they posted. See how long they've been on. Often these Twitter bots have been on for a very short amount of time. They've been on for a day or two and then all of a sudden they've sent out a million things," he said.It is against Twitter and Facebook's policy to create fake accounts and both companies have pledged to crack down.Twitter said on Wednesday it was implementing additional changes.Twitter will ban users from simultaneously posting "identical or substantially similar content to multiple accounts."Users also will not be allowed to like, retweet or follow from several accounts at the same time, the company said. 2938

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— and he's got the scars to prove it.Kyle Lano says the e-cigarettes he thought were a safer alternative to smoking were instead a more efficient way to die.There are now 9 million vapers in the United States and a measly 450 who have suffered severe lung illness. In the minds of many vapers, the numbers don't warrant the health hysteria now sweeping the nation.Or at least that's what 21-year-old Lano told himself and anyone else who would listen."I would always argue how safe it was until those e-cigarettes took effect on me," he said.One year ago, the self-proclaimed vaping fanatic suffered a collapsed left lung."At this time, I didn't think vaping had anything to do with it," he said. "And I told my family and the doctors that same thing. So, I didn't stop."His vaping habit, what he calls his addiction to the vaporized nicotine, continued unabated following his hospitalization."I liked the clouds and the nicotine," he said. "I was really into it."Then, this summer, his love of vaping collapsed, along with his right lung."My chest just got really tight and I felt a sharp pain come right back up to my chest," Lano said.His choice of whether to quit had been flanked by his addiction."Now I believe it's vaping because it's the only thing I'm doing," Lano said. "There's no other reason why my lungs should've collapsed the way they did."Lano spent six days in the hospital this time. It cost his family thousands. But much worse, he said, it cost him one-third of his right lung and a lifetime of diminished lung capacity."I didn't know how serious it was until I was actually in the hospital and they showed me how small my lung was," he said.A smoker gets plenty of warning before major health effects set in. That includes years of coughing, a loss of taste and smell. They are all precursors to something worse is on the horizon. However, for vapers like Lano, symptoms don't include a heads up — and we could be years from understanding why.Dr. Christian Thurstone is the Director of Behavior Health at Denver Health. He knows why teens and young adults get hooked on vaping. It's the same reason anyone can get hooked on smoking: nicotine. But what he calls the Russian roulette being played by millions with vaping is mind-boggling to him.And, until more is known about what's going into vaping juices, his advice is the same today as it was when vaping hit the U. S. market more than a decade ago."Until we know a lot more information about exactly what ingredient is in the vape juice that's causing these deaths and serious illnesses, the best advice is to stay away from vaping," Thurstone siad.That's terrible news for the vaping industry, which is largely unregulated and now under tremendous scrutiny. Still, 40% of Denver teens have tried vaping, and half of those were still vaping this month.Lano sees the continued popularity of vaping among teens and young adults and pictures an entire generation clouded by false claims and fancy flavors. He fears the real costs of this "untested" habit coming into focus far too late."We have our whole lives ahead of us, and we're going to end up on oxygen in our 20s and 30s," Lano said.Vaping has quickly become one of the most popular addictions for an entire generation.While vaping supporters insist cases of severe lung illnesses and death are only tied to those users who load their vaping devices with black market THC products and tainted juice pods, Thurstone has seen a different science. It's convinced him dangerous oils and heavy metals can show up in just about any vaping pod. Thurstone says that to assume a vape pod doesn't contain dangerous chemicals is little more than a user taking a leap of faith.This story was originally published by David Klugh on 3751

-- a tumor that can block blood flow to a child's heart. Michael's tumor is 5 centimeters, or about 2 inches, wide. That's enormous compared to a baby's tiny heart, which is about the size of their fist.Doctors told the family Michael's condition is so rare that no surgeon in the United Kingdom would have the expertise to remove his tumor.Emma said the family was given two options: either wait in line for a heart transplant or find a surgeon outside the country.That's when they found out about Boston Children's Hospital, a US facility whose 548

Yelp is rolling out a new policy that would warn consumers if a business is accused of "overtly racist actions."In a blog post, Yelp's VP of User Operations Noorie Malik said the company is taking a "firm stance on racism" after increasing users being warned for racist behavior at businesses, while also seeing a surge in people searching for Black-owned companies."We will now place a distinct Consumer Alert on business pages to caution people about businesses that may be associated with overtly racist actions," Malik said in the blog.Malik added that the site won't people won't be able to "artificially inflate or deflate a business's star rating" by leaving reviews based on media reports.Between May 26 and Sept. 30, Yelp said over 450 alerts were placed on business pages because they were "either accused of or the target of, racist behavior related to the Black Lives Matter movement." 905