NSIDC's newest education offering, All About Frozen Ground provides comprehensive information about the importance of frozen ground. Frozen ground and permafrost, or ground that stays frozen for at least two years, is key to our understanding of climate, frozen ground ecosystems, and the interaction between land and atmosphere.

Explore All About Frozen Ground to learn about the science behind frozen ground and why frozen ground matters to people, plants, and animals all over the world. Read an interview with permafrost expert and NSIDC Senior Scientist Tingjun Zhang, and browse a list of reading and classroom activities for K-12 learners. While you're there, submit comments on the site using our feedback form.