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Extent of Arctic summer sea ice at record low level

New data indicates the continuation of a long-term decline in summer ice underway since at least 1979. Researchers say roughly half the decline can be attributed to global warming.
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Shrinking Arctic Ocean sea ice signals climate change

Global warming may have accelerated the irreversible loss of ice shelves that are thousands of years old, say scientists.

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Next week's Wisconsin recall: a test drive of themes for Election 2012

Wisconsin recall election between Gov. Scott Walker (R) and Tom Barrett (D) enters its last furious week. It is a proving ground for the themes and players of the national election in November, analysts say.
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Decoder Wire: Mitt Romney has won the nomination. What next? (+video)

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Mae Azango has gone undercover to report on female circumcision, a rite of the Sande society in Liberia that is performed on young girls.

Mae Azango exposed a secret ritual in Liberia, putting her life in danger

When journalist Mae Azango wrote about a secret women's circumcision ritual in Liberia, she received death threats.