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Church arsons are more common than you think
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Although arson is blamed for at least three fires over the past two weeks at several predominantly black churches in Southern states, a blaze that destroyed Mount Zion African Methodist Episcopal church in South Carolina was not deliberately set. - photo by Shelby Slade
Since the shooting at Charlestons Emanuel AME Church, six black churches in the South have burned.

This may seem coincidental, but church fires are more common than many would think.

In one week, the country will see three major arsons, a purposely set fire that causes significant property damage, at churches in the U.S., Christopher Ingraham reported for The Washington Post, although many of the cases opened in recent weeks have not been closed or classified as arson.

While this number is high, it shows a significant decrease in arsons since the 1980s when there were 3,500 church arsons that year. There were only 1,700 in 2011, Ingraham explained.

One Southern church was burned by the Ku Klux Klan during a string of highly publicized church burnings in 1995, David A. Graham wrote for The Atlantic. Twenty years later, Mt. Zion Church in Greeleyville, South Carolina, burned again.

While investigators are still saying the fire that destroyed the African-American church could have been caused by lightning in the area, many are saying it should be investigated as a hate crime.

A report from the National Church Arson Task Force said 16 percent of church fires from 2007 to 2011 were arson, Leah Libresco reported for FiveThirtyEight. As of August 15, 2000, 46 people had been convicted of bias-motivated church arsons or bombings.

However, this number is lower than what it might be because fires are misclassified or do not result in arrest, she reported.

Attacks on churches can have greater effects than those on individuals because they represent an attack on a community and often destroy or damage the place where a community gathers to mourn after any other kind of attack, Libresco wrote.
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.