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In pictures: How the world is changing
Glacial change

American photographer Gary Braasch has been documenting images of environmental change since 1999.

The image on the left is from an 1859 etching of the Rhone glacier in Valais, Switzerland, and shows ice filling the valley.

In 2001, the glacier had shrunk by some 2.5km, and its 'snout' had shifted about 450 metres higher up.

Image: Gary Braasch

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