A glimmer of hope has emerged for Britain's beloved ash trees. According to a new study published in Science, some wild ash trees are becoming genetically resistant to the deadly ash dieback fungus.

Citrus trees showing natural tolerance to citrus greening disease host bacteria that produce novel antimicrobials that can be used to fight off the disease, our recent study shows. We found the trees ...

Pennsylvania naturalists are keeping an eye on a disease that has been killing beech trees in the eastern U.S. for more than a decade, but has begun spreading more rapidly in the past three years.