Three Alaska Native tribes filed a lawsuit to stop a controversial gold mining operation east of Nome. The tribes say a permit just granted by the U.S. Corps of Engineers will allow the destruction of salmon habitat and other important environmental elements in a pristine estuary. The mining process involves extracting ore from material dredged from river and ocean beds.

On the other side of the state, residents of Wrangell are concerned about a gold mine just over the border in Canada. A new report finds heavy metals in groundwater on the Alaska side.