Some deadly diseases you’ve never heard of lurk in our national parks. It's extremely unlikely that you'll ever be infected, but the odds are not zero. And if you are among of the unfortunate few, may the Good Lord have mercy on you.

Muir Woods National Monument, which celebrates its 101st anniversary today, is swarmed by visitors who admire the giant redwoods but pay little heed to the ecosystem’s lesser publicized features. A profusion of life surrounds those big trees, interacts with them, and participates with them in the intricate processes of energy flow and matter recycling that sustain the ecosystem.

A western version of the Hatfields vs. the McCoys played a role in establishment of this site, which was the first cave in the world to be designated as a national park. It was also among the first NPS areas to use fire as a natural tool to maintain the landscape—but not inside the cave!

It's big, it's bad, but it's not gonna blow. That's what the USGS is saying to counter a fake website that's calling for evacuation of Yellowstone National Park and surrounding areas due to an impending eruption.