Visitors to Yellowstone National Park should check the park's website in advance of their travels to learn what's accessible and what isn't. For instance, as of September 8 you'll no longer need to obtain a day-use ticket to drive the 6-mile road corridor between Tower Junction and Slough Creek.

Political tensions generated by the U.S. Supreme Court's decision to reject a woman's right to abortion have made it challenging at times for park rangers interpreting civil rights history.

Grand Canyon National Park biologists have received confirmation that a bat collected along the Colorado River in mid-August has tested positive for rabies. Wildlife managers generally report an increase in human-bat interactions in summer months. Individuals who have had physical contact with a bat are advised to seek medical attention and be assessed for appropriate medical treatment.

A mile-long section of underground trail at Mammoth Cave National Park in Kentucky will be rehabilitated thanks to a $6.5 million infusion of Great America Outdoors Act funds.