HIXON, Tenn. -- Tree trimmers in Hixson, Tennessee, stirred up an allergy-sufferer's nightmare. Video shows a falling river birch tree erupting into a plume of pollen. Timberline Outdoors called it a ...

There has been a recent increase in pine tree deaths reported in a swath extending from Tallahassee heading north to Thomasville.

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 ...

In this Aug. 14, 2001, file photo, Loretta McConegy points to the pollen on a ragweed plant in Newark, N.J. Allergies have gotten worse with longer season and more potent pollen. High ragweed pollen ...

As a Tree City USA, Tallahassee boasts a lush canopy – but for allergy sufferers, that beauty comes at a cost.

Angela Lin, 29, was a software engineer at Google who loved to spend time outdoors. By Christine Hauser The trails of Tuolumne Grove, a popular site in Yosemite National Park, wind through forests of ...