Why is the study of glaciers important? Glacial ice serves many functions that affect the entire Earth system, including regulating global moisture, temperature, and ocean salinity. Studying glaciers allow us to better understand how Earth's spheres are interconnected and how to better prepare for future climate-related challenges. Watch this video of the Helheim Glacier in Greenland to glimpse the dynamic nature of glaciers. Background information and teaching tips provided. [3:27]