Noise Pollution Is Pouring Into Protected Natural Areas

Rhona Wise/AFP/Getty Images
Rhona Wise/AFP/Getty Images

All right, folks. We’ve had our warnings, and now it really is time to keep it down. Experts say anthropogenic (human-made) noise is drowning out natural silence and sounds in the majority of protected areas in the United States. They published their research in the journal Science.

A babbling brook or a forest full of birdsong may soothe a stressed-out human, but for the plants and animals that live there, every single sound serves a function. Studies have shown that noise pollution can mess up animals’ migration paths, stop them from mating, and lead them to make fatally bad decisions.

Parks, wilderness, and other protected areas currently make up 14 percent of our country’s landmass. But as urbanization continues, spillover from human settlement draws nearer to every open space; 80 percent of the country is within .6 miles of a road and its accompanying traffic.

To find out how far our racket has reached, researchers captured audio recordings at 492 spots across the U.S.—some protected, some not—and used computer modeling to estimate natural sound levels at each location.

The results were not encouraging. The researchers say our noise pollution doubled noise levels in more than half of protected areas. In about one-fifth of those areas, noise was increased tenfold—an increase that shrinks the audible range of a bird’s call to 10 percent of its natural reach.


Median noise exceedance—the amount that anthropogenic noise increases sound levels above the natural level—in protected area units across the contiguous United States. 

R.T. Buxton et al., Science (2017)

“We were surprised we found such high levels of noise pollution in such high amounts of protected areas,” lead author Rachel Buxton of Colorado State University (CSU) told Science.

This is bad for people, too. Counterintuitive though it may sound, tourism plays an integral role in the success of national parks and other protected spaces. But an escape to nature loses some of its appeal if all you can hear are trucks and machinery.

Senior author George Wittemyer, also of CSU, said that while these findings are troubling, it’s important to remember that the worst is not inevitable.

“Numerous noise mitigation strategies have been successfully developed and implemented,” he said in a statement. “Our work provides information to facilitate such efforts in respect to protected areas where natural sounds are integral.”

"Next time you go for a walk in the woods, pay attention to the sounds you hear—the flow of a river, wind through the trees, singing birds, bugling elk,” Buxton added. “These acoustic resources are just as magnificent as visual ones, and deserve our protection.”

Two Eco-Minded Kids in England Are Petitioning McDonald’s and Burger King to Nix Plastic Toys

romrodinka/iStock via Getty Images
romrodinka/iStock via Getty Images

Some kids are not content to wait around while the grown-ups sort out the future of our planet. Two of them, 9-year-old Ella and 7-year-old Caitlin, have launched a petition on Change.org requesting that McDonald’s and Burger King stop giving out plastic toys with their kid’s meals, Thrillist reports.

“Children only play with the plastic toys they give us for a few minutes before they get thrown away and harm animals and pollute the sea,” the British girls wrote on Change.org. “We want anything they give us to be sustainable so we can protect the planet for us and for future generations.” The petition has almost 400,000 signatures so far, and their current goal is to reach 500,000.

McDonald's Happy Meal
McDonald's

Last October, UK environment minister Thérèse Coffey also implored McDonald’s to stop giving out plastic toys, suggesting instead that they develop smartphone-friendly games to accompany the meals. At the time, a UK McDonald’s spokesman acknowledged the importance of reducing plastic waste and cited their promise to switch to paper straws, but countered the assumption that the plastic toys were only used for a few minutes, telling The Telegraph that they “provide many more fun-filled hours at home, too.”

The fast food giant did study the environmental effects of their toys last year and found that they are hard to recycle, since they’re manufactured from various types of plastic. As a result, McDonald’s is researching more Earth-friendly ways to make their toys. A Burger King representative told The Wall Street Journal that it, too, is exploring “alternative toy solutions.”

But according to Ella and Caitlin, “It’s not enough to make recyclable plastic toys—big, rich companies shouldn’t be making toys out of plastic at all.” The young activists themselves recycle as much as they can, and even hung a poster in their window about saving the planet.

You can sign their petition here, and learn how to reduce your own environmental impact.

[h/t Thrillist]

An Underpass for Turtles in Wisconsin Is Saving Dozens of the Little Guys’ Lives

Anthony Cedrone/iStock via Getty Images
Anthony Cedrone/iStock via Getty Images

Why did the turtle cross the road? Because an underground tunnel made it safe to do so.

In 2016, the Wisconsin Departments of Transportation and Natural Resources partnered with the University of Wisconsin-Stevens Point to construct a tunnel beneath Highway 66, hoping to cut down on high turtle mortality rates, reports Robert Mentzer for Wisconsin Public Radio.

The tunnel, with Jordan Pond on one side and wetlands on the other, was a noble venture, but the turtles had no way of knowing it was a crossing point rather than a dark and potentially dangerous hole. So Pete Zani, herpetologist and associate professor of biology at the University of Wisconsin-Stevens Point, installed aluminum flashing outside of each opening, which would reflect the sky and let turtles know that there’s a light at the end of the tunnel. Zani also installed grates above the tunnel to make it less shadowy, and a small cul-de-sac in a nearby piece of the fencing to encourage turtles who had missed the tunnel to turn around.

Zani and his team found that in the first year after construction, 85 percent fewer turtles were killed on the road, and no baby turtles were among the casualties. In the last few years combined, only 40 turtles died, compared to 66 deaths in 2015 alone.

That’s great news for local turtles, of course, and it’s great news for local humans, too. The intersection in question is always busy with truckers, commuters, and families en route to Jordan Pond, and turtle crossing can exacerbate traffic congestion and increase the chance of accidents.

Not all turtles have caught on, however, and it looks like some might never get the memo. Zani found that about 30 percent of snapping turtles and 20 percent of painted turtles make it through the tunnel, and those numbers have been consistent each year since construction. “They either get it or they don’t,” Zani told Wisconsin Public Radio.

Other animals are getting it, too. As part of the experiment, Zani set up a turtle-wrangling program in which students monitored trail cameras for turtle activity outside the underpass. In photos captured by the cameras, they noticed that rodents, mink, skunks, raccoons, and even house cats were traveling by turtle tunnel.

[h/t Wisconsin Public Radio]

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