For Arctic peoples, global warming is not just transforming their land, it is also poisoning their food. Mercury levels in seals and beluga whales eaten by Inuit in northern Canada have reached levels that would be considered unsafe in fish. Now, Gary Stern of Canada's Department of Fisheries and Oceans in Winnipeg, Manitoba, and colleagues have found that seal meat contains more mercury in low-ice years, suggesting the problem will only get worse. rnThe team sampled ringed seals caught by traditional hunters in the western Canadian Arctic between 1973 and 2007. Mercury levels were higher after summers with less sea ice. They think this is because Arctic cod flourishes in low-ice years.
展开▼
