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Was 'someone else' in Las Vegas shooter's hotel room? Investigators probe new evidence, report says
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Both broken windows can be seen in the Madalay Bay Hotel after the worst mass shooting in US history in Las Vegas Nevada on Monday, Oct. 2, 2017. - photo by Herb Scribner
Investigators said on Friday theyre probing whether or not other people visited the Las Vegas shooters room at the Mandalay Bay Resort and Casino, according to NBC News.

The investigators made two discoveries that have them questioning whether someone else was in the Las Vegas gunman's hotel room when he was registered there, NBC reported.

For one, they found a phone charger that didnt match any of the phones in the room that Stephen Paddock rented.

And they discovereda key was used to get into his room at the same time Paddocks car had left the garage, NBC News reported.

There are several possible explanations for these anomalies, the investigators say, but they want to get to the bottom of it, according to NBC News.

Investigators told CNN on Friday that Paddock took 20 cruises, several of which ported in Europe and the Middle East.

The cruise stopped in countries such as Spain, Italy, Greece, Jordan and the United Arab Emirates, CNN reported.

His live-in girlfriend, Marilou Danley, joined him on nine of the cruises, CNN reported.

Authorities continue to investigate Paddocks motive and the timeline of events before he killed 58 people and left nearly 500 injured in an mass shooting last weekend.

On Thursday, authorities discovered that Paddock had scouted other locations, including both Chicago and Boston, according to NBC News.

Paddock booked a hotel at The Blackstone Hotel in Chicago, and reviewed hotel options in Boston around Fenway Park.

Investigators hope that Danley, Paddocks girlfriend, can help piece together more about the shooter to understand why he committed the killings, The Washington Post reported.

No one can put the puzzles together no one except Marilou, said one women, who Seven Network Australia identified as her sister, according to The Washington Post. Because Steve is not here to talk anymore. Only Marilou can maybe help.
Its toxic: New study says blue light from tech devices can speed up blindness
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A new study from the University of Toledo found that blue light from digital devices can transform molecules in your eyes retina into cell killers. - photo by Herb Scribner
It turns out checking Twitter or Facebook before bed is bad for your health.

A new study from the University of Toledo found that blue light from digital devices can transform molecules in your eyes retina into cell killers.

That process can lead to age-related macular degeneration, which is a leading cause of blindness in the United States, according to the researchs extract.

Blue light is a common issue for many modern Americans. Blue light is emitted from screens, most notably at night, causing sleep loss, eye strain and a number of other issues.

Dr. Ajith Karunarathne, assistant professor in the UT Department of Chemistry and Biochemistry, said our constant exposure to blue light cant be blocked by the lens or cornea.

"It's no secret that blue light harms our vision by damaging the eye's retina. Our experiments explain how this happens, and we hope this leads to therapies that slow macular degeneration, such as a new kind of eye drop, he said.

Macular degeneration is an incurable eye disease that often affects those in their 50s or 60s. It occurs after the death of photoreceptor cells in the retina. Those cells need retinal to sense light and help signal the brain.

The research team found blue light exposure created poisonous chemical molecules that killed photoreceptor cells

"It's toxic. If you shine blue light on retinal, the retinal kills photoreceptor cells as the signaling molecule on the membrane dissolves," said Kasun Ratnayake, a Ph.D. student researcher working in Karunarathne's cellular photo chemistry group. "Photoreceptor cells do not regenerate in the eye. When they're dead, they're dead for good."

However, the researchers found a molecule called alpha-tocopherol, which comes from Vitamin E, can help prevent cell death, according to Futurism.

The researchers plan to review how light from TVs, cellphones and tablet screens affect the eyes as well.

"If you look at the amount of light coming out of your cellphone, it's not great but it seems tolerable," said Dr. John Payton, visiting assistant professor in the UT Department of Chemistry and Biochemistry. "Some cellphone companies are adding blue-light filters to the screens, and I think that is a good idea."

Indeed, Apple released a Night Shift mode two years ago to help quell blue lights strain on the eyes, according to The Verge. The screen will dim into a warmer, orange light that will cause less stress on the eyes.