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A firefighter looks up at a giant sequoia tree after fire burned through the Sequoia National Forest near California Hot Springs, California, on Sept. 23. Photo: Patrick T. Fallon/AFP via Getty Images

"Upward of" 10,000 trees near giant sequoia groves have been "weakened by drought, disease, age and/or fire" and must be removed in the wake of California's wildfires, the Sequoia and Kings Canyon National Parks announced.

Why it matters: The damage to these trees, considered "national treasures," and work to remove them means a nearby key highway must remain closed to visitors as they have "the potential to strike people, cars, other structures, or create barriers to emergency response services," per a statement from the national parks.

The big picture: State Route 180, known as Generals Highway, has been closed since the KNP Complex Fire first threatened the Sequoia National Park last month.

  • The affected trees are located along this highway, which connects the Giant Forest, home to the General Sherman Tree, the world's largest tree by volume, and Grant Grove — where the General Grant Tree, the second-largest tree on Earth, is situated, per the statement.
  • There's also an unspecified number of "hazard trees" in the backcountry in addition to the ones along the highway, according to the statement.

Threat level: The blaze has burned about 138 square miles of forest and was 60% contained on Saturday night, per the national parks' statement, first issued Friday. Cooler weather has "helped slow the flames, and the area was expected to see rain starting Sunday," the Los Angeles Times notes.

  • Officials said earlier this month they've yet to determine the full extent of the damage from the KNP Complex Fire, but hundreds of the iconic trees may have been killed, per the Washington Post.

For the record: The KNP Complex Fire has been burning since Sept. 9 after two lightning-ignited fires merged.

Context: Studies show human-caused climate change is driving an increase in the likelihood and severity of droughts and heat waves and, consequently, wildfires, per Axios' Andrew Freedman.

Go deeper

Overcoming 5G's tree problem

Illustration: Annelise Capossela/Axios

It's been long known that trees can slow down some 5G signals. A recent federal study aims to figure out just how much, in order to create more accurate signal strength prediction models.

Why it matters: 5G has the potential to supercharge wireless networks, but its rollout has revealed a range of complex challenges.

45 million Americans under winter storm watches near New England

Computer model projection showing the winds moving around the powerful East Coast storm on Saturday Jan. 29, 2022. Image: https://earth.nullschool.net

Nearly 45 million Americans are under winter weather alerts and warnings from North Carolina to northeastern Maine Thursday night, as a major winter storm threatens the region.

Why it matters: It is predicted to be the biggest blizzard since 2018 to strike the Northeast with more than 2 feet of snow possible in parts of eastern Massachusetts, according to the National Weather Service.

Judge nixes Gulf of Mexico oil leases in climate-focused ruling

Tug boats prepare to tow the semi-submersible drilling platform Noble Danny Adkins through the Port Aransas Channel into the Gulf of Mexico on December 12, 2020 in Port Aransas, Texas. Photo: Tom Pennington/Getty Images

A federal judge on Thursday canceled the Biden administration's late 2021 sale of new oil-and-gas drilling leases in the Gulf of Mexico.

Why it matters: The ruling that the greenhouse gas emissions analysis by the Interior's Bureau of Ocean Energy Management (BOEM) was insufficient is a win for green groups that challenged the decision, as they seek to curb fossil fuel production.

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