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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

YOSEMITE NATIONAL PARK, Calif. — Rock climber Emily Harrington has become the first woman, and fourth person, to free-climb the Golden Gate route on Yosemite National Park’s granite wall in a single day.The 34-year-old began to scale 3,000-foot El Capitan early Wednesday.The San Francisco Chronicle says Harrington reached the top in 21 hours, 13 minutes and 51 seconds, despite banging her head on the granite wall at one point.Free climbers don't use ropes to ascend, only to catch them if they fall.Harrington posted about her accomplishment on Instagram over the weekend.“I never believed I could actually free climb El Cap in a day when I first set the goal for myself,” she wrote in a caption. “It didn’t seem like a realistic objective for me. I didn’t have the skills, fitness, or risk profile to move so quickly over such a large piece of stone. But I chose it exactly for that reason. Impossible dreams challenge us to rise above who we are now to see if we can become better versions of ourselves.”As for her head injury, Harrington says she suffered a “nasty slip” that almost took her resolve. It left a deep gash on her forehead, but she soldiered through it and reached the end by about 10:30 p.m. View this post on Instagram A post shared by ????? ?????????? (@emilyaharrington) on Nov 7, 2020 at 8:06am PST 1352

-- known as the Kangaroo service -- involved seven stopovers over a period of four days.April Donegal Airport, on Ireland's northwest coast, was named the 156

Mortgage insurance premiums required: 1.75% upfront and monthly premiums that vary with your loan term, loan amount and down payment, from 0.45% to 1.05% 156

issued Tuesday."The use of cats as part of any research protocol in any ARS [Agricultural Research Service] laboratory has been discontinued and will not be reinstated," the release states.A report issued in March by the White Coat Waste Project helped shed light on the experimenting: It said hundreds of cats and dogs were purchased from "Asian meat markets". The taxpayer watchdog group reported scientists at the USDA's lab in Beltsville, Maryland 454