Since 1947, the U.S. has been conducting annual aerial surveys across the country to monitor the health of trees. ... In 2019, about 470,000 acres contained dead trees, DePinte said.

Houston's parks director and the city's top forester spent Wednesday morning flying over the city, trying to make a grim estimate of just how many of our trees are dying.

In an aerial view, dead Joshua trees are seen in the eastern Mojave Desert on August 28, 2022, east of Baker, California. (David McNew/Getty Images) By CNN.com Wire Service.

An aerial survey conducted by the U.S. Forest Service estimates there are 587,000 dead trees on 95,000 acres in the Stanislaus National Forest. Courtesy photo / Yosemite Stanislaus Solutions Facebook ...

Aerial surveys show dead trees in Arizona, New Mexico. By Felicia Fonseca The Associated Press Dec 25, 2018 Dec 25, 2018 Updated Dec 26, 2018; 1 of 2 ...

According to a 2021 aerial survey conducted by the Forest Service to estimate the number of trees that are dying, some 4,000 acres in the Lake Tahoe Basin are impacted by tree mortality. In Lake ...

More than half a million acres of trees spread across Washington were sick, struggling, or dead last year, according to the results of an aerial survey of forests by the ...