Waterton Glacier International Peace Park, U.S.-Canada

Peace may be the mission with these twin parks on the Montana-Alberta border. But the two parks are becoming carbon emitters due to wildfires like the ones that have ravaged Yosemite hitting them, too. The 2018 wildfire season saw Waterton shutter its entrances and Glacier National Park evacuate visitors. Bark beetle infestations have also left miles and miles of standing dead timber, ready to burn at a moment’s notice. The reason bark beetle damage has exploded is that rising temperatures have allowed the bugs to thrive through the winter.