holograms

While the first 3-D television sets may start shipping as early as next year, they don't represent true three dimensional images. The televisions require 3-D glasses to work, and only present an image when viewed head on.

What happens when you pop a pill? Inside the University of Calgary's $1.5-million virtual-reality room, scientists can don a pair of 3-D goggles and find out in high-definition detail. Biochemist Christoph Sensen and his colleagues have created a virtual human dubbed the CAVEman (for Automated Virtual Environment) that lets them monitor how a virtual body metabolizes medicine.