The National Park Service's duties in overseeing concessions at Yosemite National Park are discretionary and so the agency should not be held liable for a hantavirus outbreak there in 2012 that killed three and sickened others, the federal government argues in a motion to dismiss the agency from the litigation.

Grand Teton National Park in Wyoming is incredibly eye-catching from the ground level, but how does it look from the air? Check out this short video created by the folks from World From Above.

Documents entered into a court case over the backcountry fee at Great Smoky Mountains National Park confirm that a private resort outside the park boundaries cleared and maintained a trail inside the park for a number of years.

So you can't decide between Katmai National Park or Lake Clark National Park for your bear viewing photography? Rebecca Latson weighs in on comparisons between the two.