US national parks in crisis as climate change threatens iconic natural features

Glacier National Park's ice fortress is crumbling. The giant trees of Sequoia National Park are ablaze. And even the tenacious cacti of Saguaro National Park are struggling to endure a decades-long drought. Since their creation, US national parks have embodied the pioneering spirit of America with their vast expanses and breathtaking landscapes. But today, the climate crisis is endangering the iconic features of many parks, leaving them to face a future where their names could be cruel ironies.