Yosemite’s giant sequoia trees threatened by wildfire in California

Northern California’s giant Sequoia trees, more than 3,000 years old, were threatened by a wildfire on Friday.

The Washington fire forced the closure of part of Yosemite National Park on Friday morning, and 250 acres were estimated to be approaching the lower part of Mariposa Grove at noon, according to Yosemite Park officials.

Giant Sekoya has improved forest health in the Nevada area for thousands of years, along with the volume and lightning of some of the world’s largest trees, biologists say.

Over the past century, federal fire suppression and poor forest management have left dead trees and brushes for firewood.

The U.S. has been hit by more than a decade of wildfires, burning more than 4.7 million hectares this year.

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