In this three-part series, we’re giving some of the most misunderstood characters on the periodic table a fuller story. We dive into the fascinating double lives of these elements that are both the makers and unmakers of our world. In part one, reporter Olga Loginova travels to Cape Cod to meet nitrogen. In this episode: we trudge through the marsh, avoid great white sharks, and find out how we harnessed the power of nitrogen, why that power turned against us, and what we can do about it.