Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Trees depicted in ...

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 ...

Walk into any contemporary gallery in Las Vegas, and you'll likely encounter a canvas splashed with colors that seem to defy logic. No recognizable shapes. No obvious subject. Just pure, raw visual ...