Retreating Glaciers: A look back. I watched the Mendenhall Glacier retreat for 5 years.

http://www.upworthy.com/look-at-this-glacier-in-alaska-as-it-disappears-over-the-course-of-a-century-and-try-not-to-go-whoa?c=ufb2

I saw a retreating Glacier in Juneau when I was there.