national parks

Ben Habanek

If you're hoping to take advantage of the extended winter season to visit the Apostle Islands National Lakeshore ice caves, you certainly won't be alone.

U.S. Forest Service

As the weather gets nicer, millions of Americans will take to hiking in national forests, trading in the company of man for the company of trees. But as more people take advantage of forests, the increased foot-traffic may actually pose a threat to these natural resources.