A spike in central Arctic Ocean radium levels startled scientists — and led to discoveries about how the ocean is rapidly changing
Scientists found that the amount of radium-228 in the central Arctic ocean had nearly doubled between 2007 and 2015. They traced it to shallow continental shelves where dramatic changes are taking place.
May 15, 2018
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In 2007, researchers climbed onto the icebreaker Polarstern and debarked from the northern Norwegian city of Tromsø, which sailed to the central Arctic Ocean. Here, they took samples of the surface water, examining them for a special isotope, radium-228.
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