Scientists recently scaled Yosemite’s 2,900-year-old Grizzly Giant sequoia to assess its health amid a bark beetle threat, marking one of the rarest tree-climbing expeditions in decades. Using a crossbow to rig ropes after two years of permits, the team found the tree in “encouraging” condition, spotting wildlife and hidden ecosystems in its canopy. More than just a living monument, the Grizzly Giant helped inspire Yosemite’s 1864 preservation and is honored on ranger uniforms — making its survival a symbol of conservation. This climb isn’t just adventure; it’s vital science aimed at safeguarding these ancient giants for centuries to come.
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