Everybody needs some quiet right now -- so an international team of volunteers is working to save quiet places in nature from human-made noise pollution.
"We're losing the ability to listen to nature without noise pollution," says sound recordist Matt Mikkelsen. He's part of the non-profit organization Quiet Parks International, which aims to identify and preserve the planet's last quiet places.
It's not an easy task. For a place to meet Quiet Parks' selection criteria, there can't be more than one audible sound from a human source every 15 minutes. Mikkelsen's job is to listen in prospective locations, recording the soundscape with high-sensitivity microphones.Recently, this took him to Boundary Waters Canoe Area Wilderness in northeastern Minnesota. No cars, motor boats, electricity or telephone lines are, making it a strong contender for Quiet Park status.
"When an airplane flies over and the grouse is trying to call, they're competing for space on the frequency spectrum. The grouse and the airplane interrupt each other," he says. Noise pollution has a huge impact on humans and wildlife. This grassroots movement wants to protect natural environments from manmade noise.
Quiet Parks hasn't yet decided if Boundary Waters meets its criteria -- it's one of 260 potential sites around the world that the organization is currently exploring. The team will analyze the sound recordings from each location and consider them alongside other data, like that gleaned from road and air traffic maps, or the presence of local industries that could cause disturbance, such as mining.
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