A number of national parks, including Yellowstone, Grand Canyon, and Yosemite, citing increases in Covid cases, have reinstituted face mask requirements if you enter a park building.

One of the best hikes in Everglades National Park is a slough slog into a cypress dome. Ranger Yvette Cano, the park's education director, explains what such a hike is like, and then she and Frank Dean, president and CEO of the Yosemite Conservancy, explain the challenges of funding educational and interpretive programs in the parks. They often are not part of a park's government-funded budget.

A young Ohio woman was the first to find out this year just how dangerous it is to approach bison in Yellowstone National Park, though grumpy bison are not the only risks to avoid during your summer in the National Park System.