For a long time, we’ve understood that motorized recreation disturbs wintering wildlife, and land managers often close winter ranges to motor vehicles to protect vulnerable species. However, new research is showing that non-motorized recreation, like backcountry skiing, can disturb wintering wildlife, too.

Just before Christmas, a Chilean company submitted its plan for sulfide-ore copper mining at the headwaters of the 1.1 million-acre Wilderness area in northeastern Minnesota. Take action now.