Bright Street Lights Can Be Bad for Your Health, Doctors Say

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iStock

LED technology is cost-effective and energy-saving compared to other lighting options, but it may not always be the best choice for street lights. The cool, bright lights that have recently been installed in cities like Seattle and New York can be harmful to human health, a new statement from the American Medical Association argues. The group just released new policy suggestions on the subject, as Inhabitat reports.

"Despite the energy efficiency benefits, some LED lights are harmful when used as street lighting," Maya Babu, a neurosurgeon and AMA Board Member, says in a press release.

Most LEDs emit mostly blue light, which is problematic for several reasons. The high contrast of the light—which appears bright white—increases glare and can be uncomfortable for the eyes, making it a road hazard.

It’s also bad for people who want to get to bed at a decent hour. Blue light suppresses melatonin, making it hard for people to fall asleep. Doctors and sleep experts recommend that you turn off your electronics before bed for this reason, but you can’t exactly turn off the street lights in your whole neighborhood.

Bright city lights are harmful to animals and plants, too. Light pollution can encourage trees to bud earlier and disrupt the sleep cycles of birds.

The AMA estimates that about 10 percent of existing street lighting in the U.S. has been replaced with LEDs. The organization doesn't recommend staying away from LED street lights altogether, but recommends using lights that emit as little blue light as possible, reducing glare. They also suggest that street lights could be dimmed during off-peak hours. Bulbs should also be shielded so that the light shines where it’s supposed to, rather than into the bedrooms of neighbors or up into the sky.

There’s a reason we call bedtime "lights out."

[h/t Inhabitat]

Save Up to 93 Percent on 8 Gaming Accessories and Enter to Win a Free Nintendo Switch Bundle

Stackcommerce
Stackcommerce

The Nintendo Switch is one of the hottest video game consoles of the past few decades, with worldwide sales topping 55 million (that's more than the Super Nintendo and Nintendo 64, and it's only a few million behind the original NES). The problem with a console being so popular is that it's not always easy to spot one on store shelves. If you haven't had luck finding one in recent months, you can enter this contest to win your very own Nintendo Switch, along with a copy of Animal Crossing: New Horizons, a pair of Switch-compatible Logitech wireless headphones, and a $300 Nintendo gift card. Head here for more details.

While you wait to see who wins, check out these other great deals on gaming accessories.

1. Protective TPU Case for Nintendo Switch Console; $12 (20 percent off)

Geek Supply Co.

Once you get your Switch, you'll want to keep it in pristine condition. This protective case is made with shock-absorbent, flexible TPU for full protection against bumps, scratches, dust, fingerprints, and even the occasional toss in the heat of the moment.

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2. Two-in-One Docking Station for Nintendo Switch Joy-Cons; $16 (20 percent off)

Geek Supply Co.

The standard Switch will only charge one pair of Joy-Cons at a time, so if you've got a roommate always willing to hop in on a quick game of Mario Kart, you'll need this spare charging dock to make sure their controller is ready to go. The weighted base keeps the controllers stable so they’ll sit still to charge until you’re ready to play.

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Geek Supply Co.

Same as above, except this model charges two pairs of Joy-Cons at once. The easy-to-read red LED light lets you know it’s working, and the green lets you know it’s time to play.

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This portable HD gaming device packs over 500 classic arcade games like Pac-Man, Contra, Tetris, and plenty more. And with five hours of battery life, you'll get plenty of nostalgia before needing a recharge.

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Onetify

The precision (or lack thereof) of a mouse can make all the difference when gaming on a PC. This wireless model comes with a 1600DPI true gaming sensor, ultra-precise scroll wheel, and high-precision positioning to avoid any lag while in a game.

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Geek Supply Co.

A Nintendo Gamecube controller is still the best way to play any of the Super Smash Bros. titles, and with this adapter, you can use the old-school controllers on the Wii U or Nintendo Switch for an easy way to dive into multiplayer games. It also works for PC gaming.

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Fantom Drives

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Mobile Edge LLC

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Prices subject to change.

This article contains affiliate links to products selected by our editors. Mental Floss may receive a commission for purchases made through these links. If you haven't received your voucher or have a question about your order, contact the Mental Floss shop here.



What the Color Codes on Toothpaste Tubes Really Mean

PeopleImages/iStock via Getty Images
PeopleImages/iStock via Getty Images

Packaging details—like the circles on chip bags and the symbols on cosmetics labels—can be mystifying to the average consumer. For years, a graphic has circulated the internet claiming to explain the hidden meaning behind the colored markings on the bottom of toothpaste tubes. While it's true that those color codes are there for a reason, the reason is much less interesting than the online rumors suggest.

According to Snopes, a widely-shared image on social media alleges that the colors on the seams of toothpaste tubes correlate to certain types of ingredients. The picture shows four different colored markings, with green meaning natural, blue indicating natural and medicine, red meaning natural and chemical composition, and black signifying pure chemical.

This "decoding" isn't based in truth, however. The markings on toothpaste packaging have nothing to do with the ingredients inside the tube—and even if they did, classifications like natural and chemical are too vague to mean anything. The real reason the colors are there is to aid the machinery responsible for putting the packaging together. The tiny colored rectangles are actually called eye marks or color marks, and they tell light beam sensors where a tube needs to be cut or folded. Once the toothpaste reaches the store, the markings no longer serve a purpose.

If you do want to know more about the ingredients in your toothpaste, it's not as hard as deciphering a mysterious code. "Oral care companies don’t mark their toothpastes with colored squares to try to trick consumers and hide ingredients from them," Colgate writes on its website. "If you want to know what kind of ingredients your toothpaste has, don’t look for a colored block at the end of the tube. Instead, take a look at the packaging for a comprehensive list of ingredients."

You can find the ingredients in your toothpaste listed on the outer box and/or the tube itself—and you don't need to know any secret codes to read them.

[h/t Snopes]