This story appears in the April 2015 issue of National Geographic magazine. Six zipped her jacket and ambled into the woods with an ax. She stopped at a mixed stand of emerald and burnt-orange ...

The mountain pine beetle is recognized as the most destructive of western forest insects, but the magnitude of this epidemic is already ten times larger than the greatest epidemic previously recorded.

Fungus and beetles threaten to topple the remarkable whitebark pine. Can tree enthusiasts help the keystone species before it’s too late? Mountaintop living isn’t easy. At very high elevations, the ...

These beetles are found only in small sandy pockets of pine rockland habitat in Miami-Dade County, Florida. Pine rocklands are characterized by limestone outcrops, Florida slash pine (as the sole ...