July 10, 2008

Updated: Jul 11, 2008 23:07 IST

Warming effects: An ice tunnel, part of Argentina's Perito Moreno glacier, collapses during a rare winter rupture in the province of Santa Cruz. The spectacular crash of ice into Lake Argentino usually occurs during the Southern Hemisphere's summer.
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Warming effects: An ice tunnel, part of Argentina's Perito Moreno glacier, collapses during a rare winter rupture in the province of Santa Cruz. The spectacular crash of ice into Lake Argentino usually occurs during the Southern Hemisphere's summer.

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