Climate change's 'evil twin'

Scientists warn rising CO2 levels in Arctic ocean could endanger marine life.

    Little is known about the impact of global warming on the world's oceans.

    However, a group of scientists are braving freezing Arctic conditions to test how increased levels of carbon dioxide are making the sea corrosive.

    In the second of a three part series from the Canadian Arctic, Al Jazeera's Steve Chao reports on what scientists call climate change's "evil twin."

    SOURCE: Al Jazeera


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