Scientists use ice wedges to chart climate change in the Arctic

For years scientist have known permafrost can act as reliable gauge to chart climate change in the north. A new study in the journal Nature Geoscience reveals the wide extent and speed in which ice wedges are degrading and altering the landscape.
For years Anna Liljedahl and her colleagues have been charting changes in ice wedges that can form characteristic polygon shapes in the arctic landscape. Liljedahl is assistant professor at the University of Alaska Fairbanks’ Water and Environment