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10 cities with the most amount of children
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Children make up almost 30 percent of Salt Lake City metro area population, which means one out of every three people in the state is under 18 years old. - photo by Herb Scribner
Its 2015 do you know where your children are?

Researchers of the Martin Prosperity Institute published an article in The Atlantics CityLab that listed the American metro areas with the most and least amount of children. The article focused on both the major metro areas and the specific towns, suburbs or cities with the most children.

We already know that families with kids typically relocate to the suburbs where they can get more space and access to better public schools, Richard Florida wrote for CityLab. The more interesting questions are which metros and especially which kinds of metros have larger or smaller shares of kids.

The cities with the highest shares of children were more likely to have a larger working class, vote conservatively, be home to more foreign born residents, and have a higher concentration of Latinos, according to the article. The cities with the lowest shares of children were more likely to be known for their retirement communities or college towns.

This research comes at a time when the population share of children under 18 years old has declined overall across the country. CityLab reported that the under 18 population has declined from 25.6 percent in 2000 to 23.3 percent in 2013.

But some cities, like the ones listed below, have a significant amount of children. Here are the metro areas with the largest share of children under the age of 18. Make sure to check out the slideshow at the bottom of this article for the metros with the lowest amount of children.

Salt Lake City

Let's start with Salt Lake City. Children make up almost 30 percent of the Utah capitals metro area population, which means one out of every three people in the state is under 18 years old.

Riverside, California

A little ways west in Riverside, California, about 28 percent of the population is children.

Houston

The warm, desert-like atmosphere of Texas has the third-most amount of children, who make up 27 percent of the population there.

Dallas

Not too far from Houston, the Dallas metro area also has a lot of children, with 27.8 percent of Dallas population being under 18 years old.

San Antonio

Another Texas city makes the list. Children make up 26.8 percent of the San Antonio metro area population.

Memphis, Tennessee

We havent left the Sunbelt yet. In Memphis, children make up 26.5 percent of the population, which means one out of every four people is under the age of 18.

Atlanta

And we continue our tour of the south with Atlanta where children make up 26.4 percent of the metro areas population.

Phoenix

Lets head back West for a second. Not too far from Salt Lake City, which tops the list, Phoenixs children make up 26.3 percent of the population.

Raleigh, North Carolina

Back East, children make up 26.1 percent of the Raleigh, North Carolina, population.

Indianapolis

And in the heart of America, of course there are children. Just over 26 percent of Indianapolis population is children.
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.