Editorial: Climate change is killing California’s iconic trees

Firefighters and forest ecologists are again scrambling to save ancient giant sequoia trees from the threat posed by increasingly fast, powerful and destructive wildfires that have raged through California in recent years.

This time the fire is in Yosemite National Park. Crews have laid sprinkler systems to protect Mariposa Grove — home to the 2,000- to 3,000-year-old Grizzly