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The Clean Cut: Trailer for Disney's 'Queen of Katwe' tells inspirational true story
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Disney's "Queen of Katwe" tells the true story of a girl whose life was changed by her community's encouragement and a game of chess. - photo by Kelsey Schwab
At the age of 10, Phiona Mutesis life was completely turned around, thanks to a game of chess.

On Tuesday, Disney released a trailer for a film based on Mutesi's experience. According to the description below the trailer, "Queen of Katwe" tells the true story of a girl who spends her days selling corn on the streets of rural Uganda. When she is taught how to play chess, she quickly learns she can become something bigger than herself.

With the love and support of her mother and the people of Katwe, she makes her dream of becoming an international chess champion a reality.

The film stars David Oyelowo, Lupita Nyong'o and Madina Nalwanga.

The trailer for the film begins with a quote from Nobel Peace Prize winner and president of Liberia, Ellen Johnson Sirleaf: The size of your dreams must always exceed your current capacity to achieve them.

Despite her underprivileged past, Mutesi became the national womens junior champion of Uganda in 2007 and 2008.

In a 2013 interview with CNN, Mutesi said she felt happy and excited about the attention.

"I didn't have hope that one time, one day, I would be like someone who can encourage people, and they start playing chess," she told CNN.

Disney's "Queen of Katwe" will open in U.S. theaters Sept. 23.

Watch the video on YouTube here.
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.