If you've ever driven through the Bighorn Canyon National Recreation Area, which straddles the Wyoming-Montana border, you know how serpentine that road can be and how deep the drop-off is. After all, it's called a "canyon" for good reason.
The longstanding relations between the United States and Canada are being strained a bit by a proposal to mine for coal in a biologically rich and diverse region of British Columbia that just happens to be upstream of Glacier National Park.
It seems non-native species are reaching all ends of the National Park System. In Glacier National Park, non-native lake trout have made it all the way into Quartz Lake, and officials are not happy about that.