California wildfires are now bearing down on forests of Giant Sequoias and shut the national park (via AP) https://t.co/lkQeESMK7H

— Bloomberg (@business) September 15, 2021

The sequoias need periodic wildfires to start new tree growth, clear out underbrush that compete for resources with the big trees, but the problem is that wildfires aren’t mild things anymore. Decades of fire suppression led to buildup of underbrush and combustibles, which can cause far more damaging fires.