In a move to help the National Park System become more fuel efficient, the National Park Service and U.S. Department of Energy are partnering to bring alternative fuel vehicles to the parks.

Acadia in 1919 became the first national park east of the Mississippi. Thanks to people with a passionate love for the beauty of Mount Desert Island— and its cool summers (at least compared to inner-city Boston and New York City)— the jewel dubbed “MDI” was spared from rampant development.

If you could visit only one state to tour its national parks, which state would it be? Would you head to Utah with its five "national parks," to California with its eight "national parks" and handful of other designated park units, or choose Maine with its one national park (Acadia), a stretch of Appalachian National Scenic Trail, and lone international historic site?

Spring migration is winding down across much of North America, and it’s time for birders to relax and reflect. I’ve been contemplating happy thoughts such as where I would go if given an all-expenses paid birding trip to any U.S. National Park in the next 12 months. No one has offered this to me yet, but I made up a list in my head.