If you need a quick way to create simple diagrams, Gliffy is it. Even if your job has nothing to do with graphic design, chances are you still have to produce the occasional diagram. Whether you ...

If you want more storage for your work, a Premium Lovely Charts accounts (which costs about $46 per year) lets you save unlimited diagrams, export to PDF, import your own artwork, share your ...

A slideshow of images from the coming book, "100 Diagrams That Changed the World," including early sketches of an Apple computer and the cave paintings found in Chauvet, France.

A picture, the old adage goes, is worth 1,000 words. But in science a diagram can describe things that transcend the written word. A single image can convey the simple underlying pattern hidden by ...