The state’s park department says they are experiencing an outbreak of Douglas-fir tussock moth caterpillars at Hyde Memorial ...

In high-voltage systems, electrical insulation is essential for safety operation including isolation from ground potential, and its failure will cause the entire high voltage system to fail. Metallic ...

Download this Watercolor Christmas Wreath With Spruce Branch Pine Needles Fir Pine Cone Hand Painted Holiday Card Isolated On White Background Winter Holiday Symbols vector illustration now. And ...

Annual cold snaps have kept some invasive tree pests in check, but outbreaks could become more common with warming temperatures.

Download this Watercolor Christmas Seamless Pattern With Pine And Fir Branches And Traditional White Mistletoe Hand Painted Pine Needles Illustration On Dark Red Background Repeat New Years White ...

The researchers are developing an antimicrobial, self-sterilizing composite material derived from Douglas fir needles that is essentially a silver/chitosan bionanocomposite that can be used to safely ...