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 ...

As people contemplate their holiday plans, they may find themselves in an environmental quandary, asking: Which is more ...

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