In a new study forthcoming in the May 2006 issue of The American Naturalist, researchers from the California Institute of Technology explore the hypothesis that human visual signs have been ...

Visual sign pollution is a problem that unknowingly affects most people. Visual pollution occurs through human-made visual blockades obstructing the view of the natural surroundings. Visual sign ...

Spanish sign language is used by over 100,000 people with hearing impairments and is made up of hundreds of signs. Researchers selected over 20 of these signs to develop a new visual interpretation ...

In a new study forthcoming in the May 2006 issue of The American Naturalist, Mark A. Changizi and his coauthors, Qiang Zhang, Hao Ye, and Shinsuke Shimojo, from the California Institute of Technology ...