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Spending a year in space not only changes your outlook, it transforms your genes.Preliminary results from NASA's Twins Study reveal that 7% of astronaut Scott Kelly's genes did not return to normal after his return to Earth two years ago.The study looks at what happened to Kelly before, during and after he spent one year aboard the International Space Station through an extensive comparison with his identical twin, Mark, who remained on Earth.NASA has learned that the formerly identical twins are no longer genetically the same. 561

Sharp drops in Apple, Facebook and other big technology companies ended a miserable week on Wall Street on another sour note. The S&P 500 gave back 1.2%, sealing back-to-back weekly losses and the second straight losing month for the benchmark index since March. Surging coronavirus cases in the U.S. and Europe have spooked investors into dumping riskier assets. Washington's failure to deliver badly needed aid to the recession-struck economy and uncertainty about the presidential election have also cast a pall on markets. The drops in several high-flying Big Tech stocks came after those companies issued uncertain outlooks for the future.On Friday, the number of coronavirus cases in the US rose to 9 million since the start of the pandemic. Many states are seeing record levels of cases and hospitalizations associated with the virus. 854

Since the tragedy at Sandy Hook Elementary School six years ago, the way law enforcement and citizens handle these events has changed.The Federal Bureau of Investigation (FBI) has partnered with a program known as ALERRT, which stands for Advanced Law Enforcement Rapid Response Training.The program was created in order to help standardize the response to active shooters and streamline their response in a crisis. "It was important to make sure everybody received the same training, knowing that if that response occurs, it's going to be a multi-agency response,” said Nathaniel McQueen, with Delaware State Police, in an interview with CNN.But all of this occurs once police get to the scene.What about before?"On an average of three minutes, those cops are gonna show up and they are going to take that shooter's attention from you towards them,” says Gordon B. Johnson, FBI special agent in charge at the Baltimore field office.The other major shift in response is putting the training in the hands of those who could be actually be there."Those three minutes belong to you, they do not belong to the shooter, for an average of three minutes it's up to you to survive," Johnson says.That means teaching teachers and civilians when to run and when running may not be an option.The FBI reports 30 active shooter events in 2017, setting a record.It's why training like this continues today.All of it centering from the horrific day on December 14, 2012 when 20 children and six adults were killed in Newtown. 1523

Snapchat as you know it may soon disappear.Snap, the parent company of Snapchat, said Tuesday that it is planning to redesign the messaging application to make it easier to use after facing several consecutive quarters of anemic user growth."One thing that we have heard over the years is that Snapchat is difficult to understand or hard to use, and our team has been working on responding to this feedback," Evan Spiegel, Snap's CEO, said in prepared remarks for an earnings call Tuesday.Spiegel added that the redesign could be "disruptive" to Snap's business in the short term. "We don't yet know how the behavior of our community will change when they begin to use our updated application," he said.The announcement came after yet another disappointing quarter for the newly public company.Snapchat added just 4.5 million new daily active users in the third quarter, bringing its total audience to 178 million daily users. Instagram Stories, a Snapchat knockoff product, recently hit 300 million daily users.The company's losses more than tripled from the previous year to 3 million in the third quarter, while its sales fell well short of Wall Street estimates.Even Snap's first foray into hardware appears to be a failure. The company took a nearly million writedown for excess inventory of Spectacles, its smart glasses.Snap stock plunged as much as 20% in after hours trading Tuesday following the earnings report. 1437

SEOUL, South Korea (AP) — North Korea announced that it has test-fired a new type of tactical guided weapon. The Korean Central News Agency says Chairman Kim Jong Un observed the firing of the weapon Wednesday by the Academy of Defense Science.The agency reports that Kim said “the development of the weapon system serves as an event of very weighty significance in increasing the combat power of the People’s Army.”The agency says Kim mounted an observation post to learn about the test-fire of the new-type tactical guided weapon and guide the test-fire.The announcement came after reports of new activity at a North Korean missile research center and long-range rocket site where the North is believed to build long-range missiles targeting the U.S. mainland.The White House said it was aware of the report and had no comment.The Associated Press could not immediately and independently verify North Korea’s claim. 925

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