What makes a tree a tree? Or rather, why can we recognize trees in even quite abstract depictions when they are so varied in nature? Researchers have found a clue in the branches, and used math to ...

Balsam Hill is the go-to resource for top-quality artificial Christmas trees. Originally founded to create a more realistic-looking artificial tree for a family member who was allergic to pine trees, ...

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Balsam Hill’s realistic trees imitate a wide range of pine species, from lush blue spruce to sparse alpine fir, and come in heights from four to 30 feet tall. Lights are strung by hand to minimize the ...