Tessellations.org M.C. Escher, the unofficial house artist of college dorm rooms nationwide, pioneered the art of infinite animal-themed geometry. Now you, too, can learn the secret of tessellations (hint: start with a parallelogram). British enthusiast David Annal's tribute to these hypnotizing patterns is much more than just a gallery of nifty pictures. A DIY tutorial invites you to dust off the ruler and pencil and start making your own shapes. You can also peruse several sterling examples of the form, submit your own creations, and brush up on a little art history. For example, "tessera" is Latin for tile, hence the "tessellata" or mosaics of ancient Rome. (in Science)
