Arizona's attorney general has been asked to investigate the possible theft and illegal sale of saguaro cactus that were removed or knocked down in Organ Pipe Cactus National Monument to make way for a 30-foot-tall border wall.

Contributing photographer Rebecca Latson has visited quite a few national parks within the past two decades. In this month’s column, Rebecca shares with you even more of her favorite spots for photography in the national parks she’s visited.

A loggerhead sea turtle that came ashore at Cape Hatteras National Seashore to nest was found dead at dawn Monday, apparently run over by an off-road vehicle.

Mention Glacier Bay National and Preserve and you'll conjure visions of rivers of ice coating mountains and a miles long bay rich in marine life and birds. But it also holds rainforests that fill the park's fjords, and within those forests are incredibly diverse ecosystems that scientists are still trying to fully comprehend. One thing they do know, thanks to recent research, is that those rainforests nurture one of the highest concentrations of lichen diversity found on Earth.