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Scientists: Oceans Rapidly Losing Oxygen

Fish need oxygen to breathe as much humans do, and two new reports say there is less and less of it in some of the world's oceans. According to the U.S. National Center for Atmospheric Research as changes in winds and temperature caused by global warming lead to warmer surface water temperatures, the oceans are absorbing less oxygen. There are already a number of areas -- so called dead zones -- where fish don't have enough oxygen to live and either die or swim to...

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