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                     Penguins a Barometer for Ocean Health

   The world's oceans are under assault. The increasing concentration of
   global carbon emissions is making waters warmer and more acidic, which
   is harming coral reefs, home to about one-third of everything that
   lives in the sea. One barometer of ocean health is the penguin, whose
   Southern Hemisphere range extends from the tropical Galapagos Islands
   near the equator to the ice shelf of Antarctica. VOA's Rosanne Skirble
   reports on their struggle for survival in the face of numerous threats.
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   [1]http://www.voanews.com/media/video/1931552.html

References

   1. http://www.voanews.com/media/video/1931552.html