PHILADELPHIA (WPVI) -- Tree pollen counts have escalated into the "extreme" levels and grass pollen is right behind it, according to The Asthma Center. Allergist Dr. Manav Segal says the extreme tree ...

Weather patterns like heat waves or dry spells can sometimes stall over one region. A new University of Arizona study found clues about why. The researchers analyzed tree rings from centuries-old ...

POZNAŃ, Poland — In the Arctic’s harsh borderlands, where trees wage a constant battle for survival, an international research team has discovered that extreme cold leaves lasting fingerprints in wood ...

Mexico's Federal Attorney for Environmental Protection (Profepa) closed off five hectares within a protected biosphere ...

Friday is the last day for the public to comment on the environmental impact statement of the draft National Old-Growth Amendment. The U.S. Forest Service is deciding how it will manage the remaining ...

The proposed Bitterroot Front Project extends along the eastern side of the Bitterroot Range approximately from Lolo to Darby ...