Smoggy days in the National Parks

The Times has an editorial today on smog and other forms of poor air quality that are impacting the Nation's parks. It is a shame that this has to be handled as a politicized issue, because the damage is so evident:

The net result is that one in three national parks suffers from one or another form of air pollution, including immensely popular destinations like Yosemite in California, Great Smoky Mountain, straddling the Tennessee-North Carolina border, and Gettysburg.

When the smog at the Grand Canyon is mentioned in the tourist guides, we've reached a pretty sad point in saving these common treasures for future generations. Next thing you know, they'll be killing off the wildlife.