Vox Borders - Season 0 Episode 2 Flying over the melting arctic made climate change feel much more urgent

Why ocean ice matters. The Arctic is warming twice as fast as the rest of the globe. Every year the ocean ice in the Arctic melts and refreezes again the winter. But recently the ice has been melting faster than ever. This means that the ice sheets are becoming thinner. This matters because ocean ice performs important regulatory functions for our planet.