Twilight of the Glaciers

the namesake glaciers, which, I had recently learned, might be around for only another decade or so. Given that a century and a half ago there were 150 and now there are 25, the trip makes me an enlistee in the practice known by a somewhat prickly term: last-chance tourism.

http://travel.nytimes.com/2011/07/31/travel/glacier-national-park-montana-fading-glaciers.html