Narwhal Tusks Tell a Troubling Tale

An analysis of the 10-foot-long teeth shows that as the Arctic warms, narwhal diets are changing, and their bodies are accumulating more mercury. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Episode metadata supplied by the publisher feed · Published Apr 13, 2021

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Narwhal Tusks Tell a Troubling Tale

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