The study reveals that without prescribed burns, giant sequoias face heightened risks from increasingly severe wildfires fueled by climate change. The 2020 and 2021 wildfires alone killed thousands of these iconic trees, which are critical to biodiversity and carbon storage. Untreated areas with accumulated dead wood and vegetation are particularly vulnerable, creating conditions for high-intensity fires that even these fire-resistant trees cannot survive. The loss of sequoias not only impacts ecosystems but also diminishes cultural and historical heritage, as these trees have stood for millennia.