Photoshop CS6 tutorial showing how to add a realistic, rippling, water reflection to a photo. The reflection will ripple out from it's center as if you dropped a pebble into a lake or pond. Tree: <a ...

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 ...