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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

Baby No. 4 has arrived for Kim Kardashian West and Kanye West.The reality star/mogul tweeted about the new arrival on Friday."He's here and he's perfect!" she wrote.The pair welcomed the baby via surrogate, and he joins sisters North, 5, and Chicago 1, and brother Saint, 3.On "The Ellen Show" Thursday with her nieces and nephews, Kourtney Kardashian said her sister was supposed to join her but couldn't because the surrogate was in labor.Their mother and family matriarch, Kris Jenner, appeared surprised and said she was not aware labor had started.The baby's name is sure to be of interest.In January, Kardashian West said she had been Googling Armenian boys' names in honor of her family's heritage but hadn't found anything. 743

Avon is nearing a sale.The cosmetics brand is close to being purchased by Natura Cosmeticos, the latter company said Wednesday. The deal would be all-stock, Natura said."The parties are currently ... negotiating final contractual terms of the Transaction," said the Brazil-based Natura in a press release.If the boards of the two companies approve the deal, it would mark the end of independence of Avon, the 133-year-old brand. Avon popularized the door-to-door cosmetic sales model in the mid-1900s, but its sales have continued to fall as consumers shift their shopping habits online.The deal could be announced as soon as Wednesday, 649

As Tropical Storm Nestor churns in the Gulf of Mexico on Friday, it is ready to take aim at the Big Bend of Florida, an area already devastated last year by Hurricane Michael. Although Nestor will not be nearly as powerful as Michael at landfall, the tropical storm could bring damaging winds and storm surge to parts of Florida. As of 4 p.m. CT on Friday, Tropical Storm Nestor’s top sustained winds were 60 MPH, with higher gusts. The storm has a large wind field, which means storm surge could reach five feet in the Big Bend of Florida, according to the National Hurricane Center. The National Hurricane Center said on Friday the storm could strengthen until landfall. Tropical storm and storm surge warnings have been issued along the Gulf Coast from Navarre, Florida to Yankeetown, Florida.Local officials have closed some beaches in the Big Bend and issued mandatory evacuations in areas prone to flooding. Nestor became better organized on Friday, officially attaining tropical storm status midday on Friday. After making landfall early Saturday morning, Nestor is expected to become extratropical, but still bring tropical storm-like conditions to parts of Georgia and the Carolinas, according to a National Hurricane Center forecast.The path of Tropical Storm Nestor could go over the same area hit by Hurricane Michael last year. Hurricane Michael was the first Category 5 hurricane to hit the continental U.S. since Hurricane Andrew in 1992. 1466

Apple product launches always get buzz, but one new gadget announcement has left some people bemused: a monitor stand that costs nearly as much as some computers.At its annual 188