Hill: The Environmental Protection Agency (EPA) is proposing stronger air pollution rules at national parks, but climate activists and conservationists say it may be too little, too late for the great outdoors.
The views at national parks, and the air tourists breathe, are often distorted by air pollution, the EPA said.
"The regional haze program helps to protect clear views in national parks, such as Grand Canyon National Park, and wilderness areas, such as the Okefenokee National Wildlife Refuge,...