Glacier National Park is one of the few US Government organizations that hasn't backed down to political pressure about climate change. There are multiple signs in the park that say something along the lines of "See that glacier over there on the hill? Given the rate of increasing temperatures due to climate change, we expect that glacier to disappear within 20 years. Climate change is caused by humans releasing carbon dioxide and other greenhouse gasses into the atmosphere which trap heat." It made me really thankful I got to visit last year before they are all gone.