It’s an early morning in late summer, and as commuters zip down Rock Creek Parkway—through its thick canopy of American beech, oak, and tulip poplar—one man is slowly circling a massive oak tree, ...
One of the most majestic trees in Pennsylvania is the tulip poplar (liriodendron tulipifera). You can easily identify tulips by their tall, straight trunks, gray-white grooved bark, and the ...
SEBEKA, Minn. -- While researchers rush to develop new biomass sources for cellulosic ethnanol, Minnesota for a decade has been working on short-rotation, intensive of culture trees for energy and ...
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