Five years of drought has killed many trees and made others more susceptible to bark beetles. Upwards of 62 million trees died in 2016, according to the United States Forest Service (USFS), which performs aerial surveys of forest land.
Five years of drought has killed many trees and made others more susceptible to bark beetles. Upwards of 62 million trees died in 2016, according to the United States Forest Service (USFS), which performs aerial surveys of forest land.