California wildfires threaten famous giant sequoia trees

Firefighters wrapped the base of the world's largest tree in a fire-resistant blanket as they tried to save a famous grove of gigantic old-growth sequoias from wildfires burning Thursday in California's rugged Sierra Nevada.

To save giant sequoia trees, maybe it's time to plant backups

Last month, unusually high winds knocked down 15 giant sequoias in Yosemite. If you haven't had a chance to see them in person, giant sequoias are big—like, warp-your-sense-of-scale and melt-your-brain big. Then, once you've ...

How the giant sequoia protects itself

The giant sequoia (Sequoiadendron giganteum) has developed effective strategies to protect itself against external influences in its natural environment in the Sierra Nevada. Its bark ensures that the tree survives wildfires ...

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.

page 4 from 6