Wildfire, drought and chainsaws: California’s iconic trees are casualties in the war on fire

California’s forests are in trouble. Wildfire and drought have ravaged millions of trees. Scientists say, perhaps surprisingly, the answer is more frequent fire.
Humans are largely to blame. Researchers say climate change underpins the devastation, while a century of aggressive logging and fire suppression has left timberlands choked with younger, thirsty trees primed by drought for destructive conflagrations.
The health of these exalted landscapes has for the last century taken a backseat to human interests and militarized firefighting forces. But a tipping point has been reached. Fires have become overwhelmingly explosive.