CNN: Humans can see 3-D images with only one eye, according to new research, suggesting a future in which the technology could become cheaper and more accessible. Simply looking through a small hole is enough to experience 3-D, says Dhanraj Vishwanath, a psychologist at the University of St. Andrews in More

Congenital or acquired damage to the visual processing areas of the brain is often associated with a loss of vision. Despite sustaining damage to these brain areas, some people retain an unconscious ability to respond to visual stimuli — and ability termed blindsight. Although these people are not consciously aware More