Erik Wurz (L), Instructor and Coordinator of the Polar Scientific Diving program, shows participants how to collect underwater ice samples by drilling manually prior to a dive at the Kilpisjaervi Biological Station in Finland on March 14, 2026. In northernmost Finland, divers learn to conduct research below ice in harsh Arctic conditions to understand how climate change is transforming the world's polar regions. (Photo by John MACDOUGALL / AFP via Getty Images)