European researchers are taking a close look at polar precipitation, trying to understand more about concentrations of mercury at the North Pole. It's part of a wide range of research projects underta[...]

European researchers are taking a close look at polar precipitation, trying to understand more about concentrations of mercury at the North Pole. It's part of a wide range of research projects undertaken for the "International Polar Year." Scientists are looking into how and why the highly toxic heavy metal is finding its way into the food chain.