The National Park Service believes that the big pythons that now living in Everglades National Park are very unlikely to harm visitors. Has the presence of the pythons changed the way you feel about visiting Everglades National Park?

Not only is a warming world forcing a tiny chipmunk towards the roof of Yosemite National Park, but it appears to be eroding the genetic diversity of the species as well, according to a study by University of California, Berkeley, researchers.

It might be a bit chilly, but some campgrounds at Mammoth Cave National Park will open for the season on March 1. The Houchin Ferry will get a slightly earlier jump on the season, with operations scheduled to begin this Sunday.

As our kayaks bobbed on the currents of Fingers Bay, a multi-fingered bight in Glacier Bay, we listened quietly for the tell-tale whoosh of the humpback spouting. We had seen it earlier as we neared the mouth of the smaller bay, and watched as the whale circled the bay, its wispy froth marking its progress.