Tag Archive: noise pollution

Is noise pollution making you fat?

This image is in the public domain in the U.S.

by Arline L. Bronzaft, Ph.D., Board of Directors, GrowNYC, and Co-founder, The Quiet Coalition

The discussion that stress may be linked to obesity has gone on for many years but an internet search of research linking stress to obesity will reveal that stress can indeed increase weight. One could now ask the question whether continuous noise intrusions from railways, roads, and overhead aircraft could be associated with obesity. The answer to this question appears to be “yes” with regard to road noise, “less so” with rail noise and “no” for aircraft noise in the research paper cited in this Environment International article.

While the authors of the paper cited above believe that additional research needs to be conducted, including effects of aircraft noise, to strengthen the data supporting the relationship between noise and obesity, they stress that with obesity being a major public issue worldwide, the existing data suggest that noise needs to be seriously considered as a contributing factor. They also point out that: “obesity could represent one pathway through which transportation noise impacts cardiovascular disease,” recognizing that studies have linked transportation noise to cardiovascular ailments.

Dr. Arline Bronzaft is a researcher, writer, and consultant on the adverse effects of noise on mental and physical health. She is co-author of “Why Noise Matters,” author of “Listen to the Raindrops” (children’s book illustrated by Steven Parton), and has written extensively about noise in books, encyclopedias, academic journals, and the popular press.  In addition, she is a Professor Emerita of the City University of New York and Board member of GrowNYC.

A novel approach to addressing noise pollution

 

Photo credit: The All-Nite Images licensed under CC BY-SA 2.0

A Brooklyn startup ‘listens in’ on downtown Brooklyn noise. Mary Frost, the Brooklyn Daily Eagle, reports that “NYU’s startup Sounds of New York City is developing an acoustic sensor network and installing it on lampposts along Fulton Street.”  The sensors are a “collaboration between Downtown Brooklyn Partnership and local tech startups” that are working together to bring “smart city” technology to downtown Brooklyn.

No doubt the data Sounds of New York City collects will be useful for those who want the city to do more to address noise.  But the startup wants to do more, as it aims to analyze “patterns of noise” across the city and–this is exciting–“maybe track violations through an automated system.”

The best of luck to you Sounds of New York City.

Noise pollution is endangering marine life

 

Photo credit: Eulinky licensed under CC BY 2.0

and stressing out aquatic animals, writes Jean-Pierre Chigne, Tech Times. Chigne reports on research from the University of Saskatchewan focused on noise pollution’s effect on marine life which concludes “that noise pollution can limit an animal’s ability to process chemical information released after an attack on shoal mates.” Chigne notes that “[f]ish make noises such as chirps, pops, knocks, and grunts using their teeth, swim bladders, or fins,” and noise can interfere with a “fish’s ability to hear the sounds that other fish make.” Noise, he concludes, can “distract and confuse fish, which can potentially cause them death.”

It’s a depressing read, but important.  Do click the first link to read the entire article.

Pursuing an invisible threat

by Daniel Fink, MD, Chair, The Quiet Coalition

Prof. Richard Neitzel, of the University of Michigan and a co-founder of The Quiet Coalition, views noise as an invisible threat. In this university news release, he discusses some of his research and its implications for health.

Watch Dr. Neitzel talk about noise pollution and his career studying noise pollution exposure and health outcomes:

Dr. Daniel Fink is a leading noise activist based in the Los Angeles area. He serves on the board of the American Tinnitus Association, is the interim chair of Quiet Communities’s Health Advisory Council, and is the founding chair of The Quiet Coalition, an organization of science, health, and legal professionals concerned about the impacts of noise on health, environment, learning, productivity, and quality of life in America.

How a tsunami revealed human noise pollution

 

Photo credit: Calbear22, photo released into the public domain

Phys.org reports how a tsunami that struck Hawaii in 2011–caused by the same earthquake that hit Japan and created the tsunami that triggered the Fukushima nuclear disaster–caused a temporary halt to boat traffic that allowed scientists “a rare glimpse into what the bays might sound like without human activities.” By luck, the tsunami hit while “a Duke University-lead team was recording underwater sound in four bays” on Hawaii’s Kona coat.

It turns out that oceans are pretty loud. On the day of the tsunami, the loudest part of the day reached 98.8 decibels. Why are oceans so loud? “Because sound waves travel and are amplified differently in water than in air.” But 98.8 decibels was quiet compared to a reading on a typical day, as noise from boat traffic can reach up to 125 decibels, and the sound from nearby sonar exercises tops 143 decibels.

So what did the Duke study conclude? It showed that humans created the loudest disruptions and boat traffic and sonar were “significant causes of noise in all four bays.” Human-made noise has long been a concern of conservationists who fear that “interactions caused by dolphin-encounter boat tours and other human activities” are disrupting dolphins’ sleeping behaviors and potentially interfering with their hunt for food, since dolphins rest in the bays during the day to ready themselves for the hunt at night.

Oysters can hear noise

 

Photo credit: Daniel Schwen licensed under CC BY-SA 4.0

and it’s stressing them out! Jean-Charles Massabuau, a marine biologist at the French National Centre for Scientific Research, was working on a different project when a diver noted he had never dived in such a noisy spot. Massabuabu wondered if the oysters in that location could hear the noise. After setting up an experiment to see if they would react (they did!) and how (shutting their shells), Massabuabu and team wrote up their findings. Although the oysters had a way to shut out the noise, it comes at a price–they can neither eat nor breathe when their shells are closed.

There is a well-established body of research about ocean sound, but Massabuabu thinks his study results suggest “we should expand our concerns about the impact of noise pollution beyond today’s focus on only dolphins and whales.”

We agree.

Though we must add that while noise pollution may stress out oysters, it’s probably pales in comparison to waiting to be shucked and served with a side of cocktail sauce.

Will electric vehicles contribute significantly to a quieter world?

Photo credit: cytech licensed under CC BY 2.0

Jeanine Botta, of Silence the Horns, expresses some doubts in her post, “Marketing quiet while adding to noise pollution.” Botta writes about a recent post on Huffington Post that discusses the health effects of traffic noise.  She notes that the piece, which “tells us that ‘EVs are bringing the quiet’ and concludes that ‘…you could say we’re about to enter a golden age of silence,'” was promoted by Nissan, with “Brought to you by ELECTRIFY THE WORLD – A NISSAN INTELLIGENT MOBILITY INITIATIVE” appearing next to the Huffington Post banner.  “Welcome to the world of advertorial marketing,” she says. 

What follows is Botta’s thoughtful analysis of why electric cars may not be “bringing the quiet” any time soon.  More importantly, if concern about vehicle noise is more than a marketing ploy, manufacturers should look at Botta’s suggestions on how they can “substantially reduce vehicle noise pollution” right now in both electric vehicles and in internal combustion engine cars by simply phasing out audible alarms and signals.

Click the first link above to read Botta’s entire piece.  It is well worth your time.

Human noise pollution wreaks havoc on U.S. wildlife

Photo credit: USFWS Mountain-Prairie licensed under CC BY 2.0

Rachel Buxton, a postdoctoral research fellow at Colorado State University, writes about the impact expanding transportation networks are having on remote places. Buxton notes that “noise from sources such as vehicle engines is spreading into remote places,” and cautions that “[h]uman-caused noise has consequences for wildlife, entire ecosystems and people.” Buxton and her team conducted a study using “millions of hours of acoustic recordings and sophisticated models to measure human-caused noise in protected areas,” focusing on “human sources of noise in natural environments, such as sounds from aircraft, highways or industrial sources.” The study found that “noise pollution doubled sound energy in many U.S. protected areas, and that noise was encroaching into the furthest reaches of remote areas.”

What are the consequences of these findings? Buxton writes that “[h]uman-caused noise in protected areas interferes with visitors’ experience and alters ecological communities,” adding that “noise may scare away carnivores, resulting in inflated numbers of prey species such as deer.” In addition, although plants can’t hear, they too are affected by noise because “noise changes the distribution of birds, which are important pollinators and seed dispersers.”

The news isn’t all bad, however, as Buxton was “encouraged to find that wilderness areas – places that are preserved in their natural state, without roads or other development – were the quietest protected areas, with near-natural sound levels.”  Unfortunately, the team also found that 12% of “wilderness areas experienced noise that doubled sound energy.”

But all is not lost, as thoughtful management of our protected areas can help to reduce the impact of human-caused noise. Buxton concludes her piece by identifying the strategies that can be implemented to do this, including “establishing quiet zones where visitors are encouraged to quietly enjoy protected area surroundings, and confining noise corridors by aligning airplane flight patterns over roads.”