This Fake Coral Sucks Up Mercury Pollution For A Cleaner Ocean

Mercury kills coral. This eats it before it gets the chance.

Every year, yellowfin tuna get a little more poisonous to eat. Since 2008, the amount of mercury found in the fish has gone up 3.8% a year, and that trend will probably continue—the amount of the toxic heavy metal in the ocean may double by 2050. But now there may be a good way to start taking it out.

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