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Are you saving or hoarding your money?
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With gas prices down, you may be tempted to pocket the extra money. Doing so may be bad for the economy, though. - photo by Sam Turner
What would you do with an extra $750?

Most people would have no problem answering this question. Yet while low gas prices have saved Americans about $750 in 2015, they aren't spending the money, says CNN.

Starting 2016 at just under $2 per gallon, gas is the cheapest it's been since 2009, says AAA.

Americans slow to spend their windfall is part of the reason low energy prices will do little to strengthen the economy, The New York Times reports.

In the past, more oil was imported to the U.S., meaning that low oil prices led to an overall increase in the economy. With more product coming from domestic oil companies, however, consumers would need to spend the money they would otherwise have spent on gas in order to see a net gain.

Under usual circumstances, saving money and paying off debts demonstrates financial prudence. But what benefits your personal finances may have a negative impact on the overall economy.

The paradox of thrift is an economic principle popularized by John Maynard Keynes that essentially states saving money restricts economic growth, leading to lower income and lower net value.

American spenders account for 70 percent of economic activity in the U.S., says CNN. "If people don't spend, the economy doesn't grow."

But savings are important, and some are skeptical about how detrimental saving can be.

Trent Hamm, for example, in his blog the Simple Dollar, reminds us that the paradox of thrift only applies when money is taken out of the economy. "Putting money in a savings account does not remove it from the economy," he says.

Money in a savings account is subsequently lent out by the bank and recirculated in the economy. These loans may go toward funding a new business venture, buying a new home, a car or some other consumer spending.

According to Hamm, the only thing that really takes money out of the economy is hoarding. This means storing cash in a safe or under your mattress or burying a treasure trove in your backyard.

So unless you're Smaug the dragon, Hamm would say that your saving is probably not going to hurt the economy.

Still, a certain threshold of spending must be passed in order to achieve economic growth. Where last year low gas prices were expected to increase economic growth by 0.7 percent, because of reduced spending, the actual figure was closer to 0.4 percent, says the New York Times. In 2016, low oil prices may have no impact at all on economic growth.

Ultimately a balance is needed. While some spending is needed, Investopedia counsels against making large purchases (cars or houses) during economic downturn.

Making and keeping to a budget will ensure that you are both saving for your own financial needs, and contributing to the economy with adequate spending.
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.