Jun
30
2010

Glaciers: going, going, gone…

Double Exposure: A new photo exhibit at SMM!
We often hear about global warming as an invisible chemical process, but rarely do we meet its direct impacts face-to-face. A new exhibit on Level 6 puts the evidence right before your eyes, and it might just give you a chill. Double Exposure: Aerial Photographs of Glaciers Then and Now opened in early June and runs through Labor Day (Mon. Sept. 6). It compares old and new photos of glaciers in Alaska and the Alps. The exhibit is a precursor to the upcoming exhibit Future Earth, opening Fall 2011, which will ask, "How do we survive and thrive on a human dominated planet?" (More on Future Earth coming soon!)

How to get to the exhibit:
Stop by on your way to dine at the Elements Cafe! Take the lobby elevators or musical stairs to Level 6 and turn right. You can't miss it!

More about Double Exposure
Global climate change is more obvious in glaciers and oceans than it is in the atmosphere because air reacts very quickly to changes in temperature. Ice and water, on the other hand, react very slowly due to thermal inertia--they only show changes in temperature that are slow and build up over time. So, by the time a change shows up in the oceans or glaciers, we can conclude that it's a long-term cumulative effect rather than a temporary fluctuation. This is why the Double Exposure project is so important.

Double Exposure follows the work of David Arnold, a freelance journalist and photographer who set out to duplicate the work of photographer Bradford Washburn. Washburn had photographed glaciers in Alaska and the Alps in the 1930s and 1960s. To create a visual record of climate change, Arnold worked from 2005-2007 to photograph some of the same sites as Washburn from the same vantage points. As you compare the old and new images, you can see that significant melting and changes in the flow of water took place in as little as 45 years.

As a visitor to Double Exposure, you'll learn how to read a glacier and interpret the photographs yourself with the exhibit to guide you. You'll learn how Arnold solved the challenge of duplicating Washburn's photos with physics. You'll also learn about current impacts, trends, and potential solutions to global warming.
So, please come check out these amazing photos!

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