About 40 percent of interior Alaska is underlain by ice-rich permafrost – permanently frozen grounds made up of soil, gravel and sand – bound together by ice. Certain conditions, such as climate ...

West Coast forest landowners are expected to adapt to climate change by gradually switching from Douglas-fir to other types of trees such as hardwoods and ponderosa pine. West Coast forest landowners ...

PORTLAND, Ore. (KOIN) — Climate change, droughts, invasive insects and other factors have had an impact on Oregon’s vast forests for years, but recent research reveals a proliferating issue.

When Brian French learned last week that the Doerner Fir was burning, he could think of only two reasons why: Either lightning had struck the enormous conifer in coastal Oregon — or someone had set it ...

More than 36 million trees died across California last year — almost triple the number of trees that perished the year before — scattered across 2.6 million acres of the drought-ridden state. The ...