The chemicals that cause leaves to change color in fall

Every year, the arrival of fall heralds one of nature's most magnificent transformations.
And while many will witness the green leaves of summer foliage transition into a vibrant spectrum of colors before falling from their trees, few will stop to ask why these color changes occur in the first place. » 10/14/11 8:14am 10/14/11 8:14am

A Lovely Autumn Walk in the Park with a Robotank

That hulking tankbot might look scary as hell if he were all alone, but somehow those falling leaves make the piece seem calm and serene. Bizarre, isn't it? German concept artist Lorenz Hideyoshi Ruwwe loves robots, gaming, and creating art. He's got everything from concept art, to finished digital designs to his own… » 4/01/08 11:40am 4/01/08 11:40am