A swarm of destructive wasp-like insects is spreading fast, and it could mean bad news for pine trees, holiday traditions, and your backyard.

The amount of forest with problems is only a small fraction of the overall 22 million acres state officials looked at, but it is slightly above the 10-year average ...

An aggressive hatch of Douglas-fir tussock moth caterpillars is threatening trees, both in national forests and in Santa Fe.

The tree, which is over 4,800 years old, is found in a grove of other trees, but its exact location is kept a secret.

Some cherry and plum trees in the central Ohio area are turning black from a fungal disease. Here's what you need to know.

The Cape chestnut is a small to medium-sized growing tree native to the Cape region of South Africa. It is a member of the ...

Parts of the North Cascades and Mount Baker are facing an outbreak of the western spruce budworm, aerial surveys reveal. The ...

Harnessing methods used to successfully predict and understand the spread of COVID-19 during the pandemic, a new University of Sheffield project aims ...

Brookhaven National Lab has received some noisy guests this summer—a brood of cicadas that have been incubating for the last ...

Belwin Conservancy’s Music in the Trees event is returning to the red pine grove this summer. The annual event, which began ...

What can be done about the infestation of the southern pine beetle in Suffolk County and elsewhere in the northeast where the ...