National Parks Traveler Episode 50: "AJ," The New Allosaurus From Dinosaur National Monument, And Saratoga National Historical Park

Across the United States, from Alaska to Puerto Rico, there are about 112 million acres of officially designated wilderness. That amounts to about 5 percent of the country’s land mass. It might appear to be even smaller when you consider that more than half of those 112 million acres protected as wilderness are in Alaska.

Since this past December here at the Traveler we’ve been bringing you a series of stories on the Endangered Species Act and the threatened and endangered species it’s intended to keep from going extinct.

For me, it’s been an eye-opening series because of what our editors and writers have learned about threatened and endangered species — from birds to trees and even to grasses — and the work being done to help them recover. It’s certainly not an easy task, and one that often takes decades before you can see progress.