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Are lockdowns the best school safety practice?
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There's been a flurry of school lockdowns in recent weeks, and schools have worked to stop threats before they happen. Is this the best practice? - photo by Herb Scribner
Two schools in the greater Louisville, Kentucky, area went into lockdown on Thursday after authorities received a call of an active shooter on one of the campuses, according to WFSB, a local news station.

The call, which informed authorities that there was a shooter at Western High School, was first received at 9:07 a.m. Authorities responded immediately, putting both Western High School and Waller-Williams Environmental School, which was shut down because of its proximity to the other school, on lockdown.

Similarly, 10 schools in the greater San Diego area went into lockdown after they all received threats Thursday, according to NBC San Diego. All 10 schools lifted their bans after authorities searched the buildings and didnt find anything threatening.

The common thread between these two events is that officials and authorities acted with lockdowns before any violent attacks. Thats not surprising as school lockdowns have been a common form of school safety since the late 90s, according to NPR.

In fact, lockdowns are so common that The New York times called them "the new fire drill."

Despite their popularity, not all support the use of lockdowns. In the wake of the Sandy Hook school shooting in 2012, some criticized lockdowns because they're a passive strategy that keeps teachers and students from taking action against security threats, ABC News reported.

"We've taught a generation of Americans to be passive and static and wait for police," Greg Crane, founder of ALICE, a school safety program, told ABC News. "We don't recommend just locking a door because locked doors have been defeated before."

Crane also said teachers don't feel safe during lockdowns because they are often asked to shut off the lights and hide with the children.

Despite these criticisms, most experts recommend lockdowns and other preemptive measures to limit safety threats.

The National Association of School Psychologists published a report that said one of the best school safety practices is thinking ahead and stopping a potential threat before it occurs.

To do this, the NASP suggests schools create a multitiered system of supports that encompass prevention, wellness promotion, and interventions that increase with intensity based on student need, and that promote close schoolcommunity collaboration. This will help school officials identity potentially threatening students or school safety threats before they come to fruition, the report says.

The report also suggests the federal government provide more state funding for school safety measures. Experts agree that schools need more funding and resources to help keep children safe while in school.

"The vast majority have a crisis plan on paper. It's much more common that we find those plans are collecting dust on the shelf and they're not a part of the culture or the practice," Kenneth Trump, a school security consultant, told CNN. "I don't believe we need to throw out the book of best practices on school safety. I think we do need to focus our resources, times and conversation back on the fundamentals."

Experts say its important for parents and teachers alike to encourage children to come forward with any information they know about potential school threats or dangerous students, CNN reported.

"Kids have to know that they can come forward and what they'll talk about is confidential, but also taken seriously," Katherine Newman, co-author of "Rampage: The Social Roots of School Shootings, told CNN. They are the ones privy to leakage of intentions and rumors. Trapping that information and getting it to the right place is a very important defensive measure."
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.