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With last week’s release of the National Oceanic and Atmospheric Administration’s annual Arctic Report Card, the BBC turned to Donald Perovich, an adjunct professor of engineering at Thayer School of Engineering, for his analysis.

The BBC reports that arctic sea ice “experienced a bounce back in 2013,” but Perovich says the performance is still weak. “Since we talk about an Arctic Report Card, last year, sea ice got an F. This year, it got a D. It’s still at a low extent,” he says.

Listen to the full story, broadcast 12/15/13 on BBC.