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 ...

Artificial Christmas trees come in myriad shapes and sizes—a good thing, if you ask us. After all, we all celebrate the season differently, despite our common traditions. Who am I to judge if someone ...

BANGKOK, Thailand, -- Models of trees and plants appear frequently as part of everyday scenes in a variety of applications, ranging from architectural design and urban planning to computer games, film ...