exposed people on the globe." Mercury, released by coal-burning power plants, and PCBs, which were once produced by industry, build up in body fat and thus are found at especially high levels in fatty animals such as whales and seals and fish such as tuna and salmon. "Most of Canada's coastline is at our northern fringe, and northern aboriginal communities rely on these ecosystems as a source of nutrition, economic development, traditional customs, and culture," Blais said in a statement. "We now have evidence that seabirds can concentrate industrial contaminants in coastal areas to levels that can be affecting those ecosystems." --SP 2231 Local Time 1931 GMT
