Narwhal Spiraled Tusks Reveal Toxic Mercury Exposure Related to Climate Change
Narwhals with their characteristic spiraled tusks in dense pack ice. Credit: ©Paul Nicklen / paulnicklen.com Like rings in a tree trunk, a narwhal’s tusk provides a window into changing conditions in the Arctic. In the Arctic, climate change and pollution are the biggest threats to top predators like narwhals. Studying…
bubmagMarch 31, 2021