Should campground reservations be mandatory in the National Park System, or should all campsites be on a first-come, first-served basis?

So, are more Americans looking for a vacation in Death Valley National Park than, say, Yellowstone National Park? The folks at Google Maps might have you think so.

Though Mammoth Cave and Carlsbad Caverns national parks are perhaps best known within the National Park System for their caves, other parks have caves worth exploring, too. And one, Sequoia National Park, has extended the season for touring Crystal Cave deep into November.

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.