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Video shows deer chasing bobcat through backyard
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Bobcats can be scrappy predators. But as this video proves, they're sometimes no match for an angry deer. - photo by Grant Olsen
CASTLE PINES, Colorado What happens when a bobcat encounters a deer? That usually depends on the size of the bobcat and how hungry it is. If you search bobcat attacks deer on YouTube, youll find plenty of evidence that bobcats have no problem taking on a much larger deer.

As seen in a recent video, however, the deer sometimes becomes the aggressor.

According to a report from Denver7, the video comes from a family in Colorado. Jim Brennan was filming a bobcat in the yard when a deer began chasing it. The brief pursuit ended when the bobcat jumped over some shrubs and hid beside an air conditioning unit.

When Brennan moved to a different window to get a better view of the action, he was shocked to find that there were two other bobcats hiding out beside his house.

The fact that three bobcats were seen in the Brennan's yard was unsurprising to Jennifer Churchill, of the Colorado Parks and Wildlife.

"(Bobcats are) out there, all over the place," Churchill told Denver7. "They're just really good at hiding."

The scenes in the video serve as a reminder that bobcats and other predators often pass through residential areas. Pet owners should be particularly aware of the dangers posed by wild animals, as demonstrated in this video of a mountain lion battling a Doberman.

Here are some practical tips to reduce the danger:

  • Keep your pets indoors from dusk to dawn
  • Secure your pets in the yard with an enclosure, not a chain
  • Feed your pets indoors
  • Trim brush in your yard to reduce hiding places
  • Install motion-activated lights around your house
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.