As days lengthen and temperatures rise, black bears in national parks all across the country begin to move around the forest in search of insects, nuts, and berries. But they also venture beyond the parks’ boundaries, making their way into gateway communities to look for food. In cities and towns surrounding popular destinations like Great Smoky Mountains National Park, this situation can pose a serious threat to bears and humans alike — increasing the need to educate park visitors of all ages on proper bear etiquette and food storage practices.

You'll soon need a permit if you plan to boat on the Colorado River between the Glen Canyon Dam and Lees Ferry. The National Park Service at Glen Canyon National Recreation Area will begin requiring the free permit on June 1 for that 16-mile stretch of river.

With spring runoff growing by the day, Lake Powell's water level is increasing about a foot a day, according to the National Park Service.

Cedar Creek and Belle Grove National Historical Park in Virginia will offer ranger-guided walks of Civil War army trenches on Sunday mornings, May 21, June 4, September 17, and October 1. The walks begin at 10 a.m. and last about an hour.