Giant Sequoias Yield Longest Fire History from Tree Rings

(PhysOrg.com) -- California's western Sierra Nevada had more frequent fires between 800 and 1300 than at any time in the past 3,000 years, according to a new study led by Thomas W. Swetnam, director of UA's Laboratory of ...

Wildfires torched up to a fifth of all giant sequoia trees

Lightning-sparked wildfires killed thousands of giant sequoias this year, leading to a staggering two-year death toll that accounts for up to nearly a fifth of Earth's largest trees, officials said Friday.

Group clones California giant trees to combat climate change

At the foot of a giant sequoia in California's Sierra Nevada, two arborists stepped into harnesses then inched up ropes more than 20 stories into the dizzying canopy of a tree that survived thousands of years, enduring drought, ...

Coast redwood and sequoia genome sequences completed

Scientists have completed the sequences for the coast redwood and giant sequoia genomes. The research, officially published this week in the journal G3: Genes, Genomes, Genetics, helps to better explain the genetic basis ...

The ancient giants of Yosemite, under a billion stars

The Mariposa Grove of Giant Sequoias, at the heart of California's Yosemite National Park, is home to 500 of the towering trees—many at least 2,000 years old, having sprouted around the time of Jesus Christ.

Drones help monitor health of giant sequoias

Todd Dawson's field equipment always includes ropes and ascenders, which he and his team use to climb hundreds of feet into the canopies of the world's largest trees, California's redwoods.

Upon further review, giant sequoia tops a neighbor

Deep in the Sierra Nevada, the famous General Grant giant sequoia tree is suffering its loss of stature in silence. What once was the world's No. 2 biggest tree has been supplanted thanks to the most comprehensive measurements ...

Hope after wildfire: Tiny sequoias could grow into giants

Ashtyn Perry was barely as tall as the shovel she stomped into barren ground where a wildfire last year ravaged the California mountain community of Sequoia Crest and destroyed dozens of its signature behemoth trees.

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