Pristine or polluted?

Polar regions have long acted as a chemical sink for the planet—locking away pollutants. Understanding how pollutants travel from temperate to poles is priority of environmental chemists, especially climate change intensifies problem pollution. Answers will be key creating livable Arctic. For 300 polar bears that call Svalbard, Norway, home, rocky archipelago between top Norway and North Pole relative oasis. Because Svalbard only scrap solid ground hundreds kilometers, rely on it build their dens hunt reindeer. At first glance, live in pristine, seemingly barren world ice snow. Aside occasional run-ins with roughly 3,000 people who islands seem far removed humans. So when William Frederik Hartz other chemists