New National Park Service rules allow 540 snowmobiles a day into Yellowstone
National Park Service studies have shown that allowing 250 snowmobiles a day into Yellowstone National Park causes ecosystem damage and noise pollution. So with new rules effective starting winter 2008, the agency logically will allow 540 snowmobiles a day into the park, down from an original suggestion of 720. The NPS followed through on its intention to disregard public opinion, which strongly favored a snowmobile-free park.
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