How do you manage 21st-century issues while holding steady to historic character and significance? That's the question Yellowstone National Park officials are mulling as they look at the functionality of the North Entrance to the park.

The Kemp's ridley may be little as sea turtles go, but it's got big problems. It was already the world's most endangered marine turtle before the mammoth Deepwater Horizon oil spill in the Gulf of Mexico threatened to wreak havoc on its vital habitat.

With work now proceeding on a mile-long bridge along the Tamiami Trail to help improve water flows through the Everglades, the National Park Service is calling for another 5.5 miles of bridges to be built.

For some reason, it seems that you become more connected with landscapes in the National Park System if you frame them through through a camera's viewfinder. And the folks at St. Croix National Scenic Riverway hope that will be the result when they bring at-risk teens to the riverway to photograph it.