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 ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. A seemingly impossible math puzzle, discovered stuck to a tree by a ...

What if improving academic performance in some of the nation's most disadvantaged and lowest-achieving schools was as easy as planting trees in the schoolyard? It's not that simple, of course, but a ...