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As computers, tablets and cellphones have become a growing part of our lives, the exposure to blue light emitted from these devices increases. While blue light exposure has been known to cause strain in eyes, Oregon State University researchers studied the effect of blue light exposure on aging. Based on to their findings, exposure to blue light could cause aging to accelerate. For their study, researchers used common fruit flies and exposed them to 12 hours of blue LED light and 12 hours of darkness. To compare, researchers kept a group of flies in total darkness, as well as a group of flies that were exposed to light that had the blue wavelengths filtered out. The researchers said they chose fruit flies because their cellular and developmental mechanisms are similar to humans.The researchers said that flies exposed to blue LED light sustained damage to their retinal cells and brain neurons and had impaired locomotion. Even more stunning, some of the flies, which exhibited some brain damage, were mutants that did not develop eyes."The fact that the light was accelerating aging in the flies was very surprising to us at first,” said Jaga Giebultowicz, a professor of integrative biology at Oregon State. “We’d measured expression of some genes in old flies, and found that stress-response, protective genes were expressed if flies were kept in light. "We hypothesized that light was regulating those genes. Then we started asking, 'what is it in the light that is harmful to them,' and we looked at the spectrum of light. It was very clear cut that although light without blue slightly shortened their lifespan, just blue light alone shortened their lifespan very dramatically.” 1708

ATLANTA, Ga. – Frank Reiss has a deep love for books. "I think they're beautiful," he said. "I love looking at them I love holding them."The success of the titles, authors and tales on the shelves of his Atlanta shop are a big part of the twists and turns in the story of his small business.He opened A Capella Books in 1989. In the beginning, he focused on books that were hard to find."Used books, ordinary used books, scarce and rare books," Reiss said. Then, people started to turn to the internet for books. "When Amazon showed up, books came pretty available, anyone with a computer could find a book anywhere and it got more and more that way," Reiss said. "A lot of our inventory that used to be scarce, out of print, to to even 0 books became pretty common," Reiss said. "Became and books and it became difficult to make a living selling those."Reiss says his expenses continued to rise while his sales didn't. To keep his business and his job alive, he had to climb into a hole. He says he started putting expenses on credit cards. He says 15 years ago, the debt was at its worst."I probably got to about a quarter million dollars in debt," he said. The plot twist that changed his store was figuring out what to offer the internet couldn't. "We could really capture an audience for books when you could bring the authors to town or store or other venues in town and give their fans the opportunity to meet them and get their books signed," Reiss said. Reiss started to work with the Carter Presidential Library, not far from A Capella, to hold book signings and events. He also started to sell newer books and moved his business to a cheaper location. "Sales versus our low point versus now is probably six times the revenue that we had at its low point," Reiss said.He also says an independent bookstore has a human element the internet does not. "We know our customers reading taste, they know our taste, we have conversations and its a very real experience," Reiss said.Independent book sales rose steadily at the end of last decade, according to the Independent Booksellers Association. “I think you can open a book and just be they can take you anywhere,” said Reiss. While commerce is king, for the characters with a more personal touch, the end hasn't been written. 2318

Boeing safely landed its crew capsule in the New Mexico desert Sunday after an aborted flight to the International Space Station that could hold up the company’s effort to launch astronauts for NASA next year.The Starliner descended into the Army’s White Sands Missile Range in the frigid predawn darkness, ending a two-day demo that should have lasted more than a week. A trio of red, white and blue parachutes popped open and airbags also inflated around the spacecraft to ease the impact. “We pinpoint landed it,” NASA Administrator Jim Bridenstine said at a post-landing briefing. The successful return capped a rocky start to a mission that was supposed to include a docking with the space station. Managers will review all the data before deciding whether to do another test flight or go straight to flying astronauts, said NASA’s Steve Stich. After seeing this first test flight cut short and the space station docking canceled because of an improperly set clock on the capsule, Boeing employees were relieved to get the Starliner back.Recovery teams cheered as they watched the capsule drift down through the air and make a bull’s-eye landing. The touchdown was broadcast live on NASA TV; infrared cameras painted the descending capsule in a ghostly white. As the sun rose, close-up views showed the large white and black capsule upright — with hardly any scorch marks from re-entry — next to a U.S. flag waving from a recovery vehicle. The astronauts assigned to the first Starliner crew — two from NASA and one from Boeing — were part of the welcoming committee. “A beautiful soft landing,” said NASA astronaut Mike Fincke. “Can’t wait to try it out.” It was the first American-made capsule designed for astronauts to make a ground landing after returning from orbit. NASA’s early crew capsules — Mercury, Gemini and Apollo — all had splashdowns. SpaceX’s Dragon capsule, which made its orbital debut last winter with a test dummy, also aims for the ocean at mission’s end.Minutes after touchdown, top NASA and Boeing officials poured into Mission Control in Houston to congratulate the team. The newly returned Starliner also got a personalized name: Calypso, after Jacques Cousteau’s boat.The capsule’s first trip to space began with a smooth rocket ride from Cape Canaveral on Friday. But barely a half hour into the flight, it failed to fire its thrusters to give chase to the space station and ended up in the wrong orbit. The problem was with the Starliner’s internal clock: It did not sync up with the Atlas V rocket and was off by 11 hours, according to Boeing’s Jim Chilton. The capsule burned so much fuel trying to orient itself in orbit that there wasn’t enough left for a space station rendezvous. Flight controllers tried to correct the problem, but between the spacecraft’s position and a gap in communications, their signals did not get through. They later managed to reset the clock. Boeing is still trying to figure out how the timing error occurred. The mission lasted nearly 50 hours and included 33 orbits around the Earth, about 100 orbits fewer than planned. A test dummy named Rosie the Rocketeer — after Rosie the Riveter from World War II — rode in the commander’s seat. Also returning were holiday presents, clothes and food that should have been delivered to the space station crew.Even though not all goals were met including a station docking, “in my eyes, it was a huge success,” said Boeing flight director Richard Jones.There were no parachute problems this time. Last month, only two parachutes deployed during an atmospheric test because workers failed to connect a pin in the rigging.“We didn’t do everything we wanted to do, but we don’t see anything wrong with this spaceship right now,” despite the timing error, Chilton said. He apologized to the six space station residents for not delivering their Christmas presents. Boeing had been shooting for its first astronaut launch in the first half of 2020. This capsule is supposed to be recycled for the second flight with crew; each Starliner is built to fly in space 10 times.The capsule will return to Florida’s Kennedy Space Center in two weeks for inspections and refurbishments.“We’ve got a lot of learning in front of us,” Bridenstine said. “But we have enough information and data to where we can keep moving forward in a very positive way.Despite its own setbacks, SpaceX remains in the lead in NASA’s commercial crew program.SpaceX’s Dragon crew capsule successfully completed its first orbital demo last March. While the flight to the space station went well, the capsule exploded a month later on a test stand at Cape Canaveral. If a launch abort test goes well next month, SpaceX could start launching NASA astronauts by spring and end a nearly nine-year gap in flying people from Cape Canaveral.As its space shuttle program was winding down, NASA looked to private industry to take over cargo and crew deliveries to the space station. SpaceX kicked off supply runs in 2012. Two years later, NASA hired SpaceX and Boeing to ferry astronauts to the orbiting lab. SpaceX got .6 billion under NASA’s commercial crew program, while Boeing received more than billion.The goal was to launch NASA astronauts by 2017.Because of delays, NASA is looking to buy another two seats on Russian rockets in 2020 and 2021 to guarantee a continuing U.S. presence on the space station. Even when private companies are regularly carrying up astronauts for NASA, the space agency always will reserve a seat for a Russian in exchange for a free U.S. seat on a Soyuz.Over the years, these Soyuz rides have cost NASA up to million apiece, with the tab totaling in the billions.A recent audit by NASA’s inspector general found a Starliner seat will cost slightly more than that, with a Dragon seat going for just over half the price.___The Associated Press Health and Science Department receives 5902

As reports circulated Wednesday about the alleged "Momo Challenge" that encourages children to harm themselves, YouTube issued a response saying no videos of the sort had been published recently on its platform."We want to clear something up regarding the Momo Challenge: We’ve seen no recent evidence of videos promoting the Momo Challenge on YouTube. Videos encouraging harmful and dangerous challenges are against our policies," YouTube said in a tweet. "If you see videos including harmful or dangerous challenges on YouTube, we encourage you to flag them to us immediately. These challenges are clearly against our Community Guidelines."Facebook, which owns WhatsApp — a platform reportedly targeted by the challenge — also issued a response."We care about the safety of our community and want to provide assistance for people in distress. As outlined in our Community Standards, we don't allow the promotion of self-injury or suicide and will remove it when reported to us," the statement read. "We also provide people who have expressed suicidal thoughts, and people who want to reach out to a friend who may be struggling, with a number of support options and resources. These global tools and resources were developed with the help of over 70 mental health partners around the world and we’re continuously improving them to build a safer and more supportive community on Facebook." 1402

Another group of high school students has been caught on video giving the Nazi salute.This time, the eight-second video appears to show students from Pacifica High School in Garden Grove, California, singing a Nazi marching song while raising their arms in a Nazi salute. The video was first obtained by 316