Seen in more than 100 countries, NOVA is the most watched science television series in the world and the most watched documentary series on PBS. It is also one of television's most acclaimed series, having won every major television award, most of them many times over.
Last Episode42x21 Lethal Seas Aired: May. 13, 2015
Sharply rising carbon emissions are entering Earth's seas at a staggering rate, raising their acidity. Learn how scientists are researching the …
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