The "Ninety-First Parallel" refers to a specific line of latitude located 91 degrees north of the equator. This parallel is situated in the Arctic region, primarily over the Arctic Ocean and surrounding areas. It is significant in geography and climate studies, as it marks a boundary where extreme polar conditions prevail. In the context of geopolitics, the Ninety-First Parallel is relevant for discussions about territorial claims and environmental research in the Arctic. It serves as a reference point for scientists studying climate change and its impact on polar ecosystems, as well as for nations interested in resource exploration.