US national parks, including Glacier, Sequoia, and Saguaro, face potential name ironies due to climate crisis impacts.

Identity crisis: US national parks face a future where their names could be ironies due to climate crisis. Glacier National Park's ice fortress is crumbling, Sequoia National Park's giant trees are ablaze, and Saguaro National Park's cacti struggle in a drought. These parks have embodied America's pioneering spirit, but now the climate crisis puts their survival at risk.