Natural history and cultural heritages can't be constrained by political boundaries, which is one reason why it's good to see the United States and Russia working to forge ties through a “Shared Beringian Heritage Program." Through this program the proposed Beringia National Park in Chukotka would be linked with the Bering Land Bridge National Preserve and Cape Krusenstern National Monument in Alaska.

Now here's a deal that's hard to pass up if you're going to be anywhere close to Grand Teton National Park on Tuesday: The National Parks Conservation Association is inviting you on a float through the park.

Fans of lighthouses can start counting down the days until four more light stations at Apostle Islands National Lakeshore have been restored to a certain degree.

Four trails in Mammoth Cave National Park will officially be open to mountain bikers beginning October 12, barring a reversal by regional National Park Service officials