As we burn fossil fuels, carbon dioxide is seeping into the oceans and creating an alarming scenario - the oceans are acidifying, threatening the survival of many marine species. The brothers dive near a small volcanic island in Italy that has naturally acidic seawater, and see what the rest of the ocean might look like if the trend continues. Their quest for answers brings them back to North America to meet scallop and mussel farmers who are already experiencing the impact of this phenomenon.
Aired:
Aug 29, 2019
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