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Not surprisingly, cities tend to be very noisy, with background levels averaging around 50 to 60 decibels. And that’s just the average: heavy truck traffic can reach around 85 dB, while construction jackhammers can reach 95 dB if you’re standing less than 50 feet away.
By contrast, regions like Yellowstone National Park have background noise levels down at around 20 decibels, which, as Underwood reports, is about as hushed as things were before European colonization.
So who cares? For one, all the artificial noise and light that cities produce can have bizarre effects on humans and wildlife — effects we have yet to fully understand. Loud cities can interfere with the ability of owls and bats to hunt. And, because of urban noise, some male birds now have to sing at higher frequencies, making them less attractive to potential mates.
Tag Archives | urban
From destruction comes regeneration. A photo essay via Web Urbanist
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There are thousands of abandoned big box stores sitting empty all over America, including hundreds of former Walmart stores. With each store taking up enough space for 2.5 football fields, Walmart’s use of more than 698 million square feet of land in the U.S. is one of its biggest environmental impacts. But at least one of those buildings has been transformed into something arguably much more useful: the nation’s largest library.
Meyer, Scherer & Rockcastle transformed an abandoned Walmart in McAllen, Texas, into a 124,500-square-foot public library, the largest single-floor public library in the United States.
The library even has an acoustically separated lounge for teens as well as 6 teen computer labs, 16 public meeting spaces, 14 public study rooms, 64 computer labs, 10 children’s computer labs and 2 genealogy computer labs. Other new features include self check-out units, an auditorium, an art gallery, a used bookstore and a cafe.