Before and after glacier photos

A series of "before and after" methamphetamine addict photos are making the rounds on various blogs. But this "before and after" series is disturbing in a different sense. Photos of glaciers that shrink over time show clear evidence of global warming.
Link (thanks, xtop)

Update: Boing Boing reader Arlo Midgett says:

IANAG(laciologist), but I think it's important to note that, while receding glaciers may be caused by global warming, they are far from proof of it. If I remember my geology classes correctly, glacial recessions and advances have more to do with the amount of yearly precipitation (snow) high up in the accumulation zones than with the overall global temperature. In many cases, a receding terminus can be an indication of the weather patterns of 30 years ago.

Here in Southeast Alaska we have neighboring glaciers that are complete opposites. Contrast, for instance, the Mendenhall Glacier – which has been steadily receding for decades – and the Hubbard Glacier which is advancing. Barely 200 miles separates them.

And reader James Kirkus-Lamont in New Zealand says,

No nice pics or anything but it seems some glaciers here in .nz may *benefit* from global warming.

Link