Thousands of online images from Flickr have already been tagged accurately by a new software program.
A new website lets people search for hard-to-describe items by using pictures instead of words.
Transplanting stem cells into retinas replaces light-sensitive photoreceptors that have been lost to eye disease.
The new Sony Reader is the coolest e-book device yet--for those who can stomach the price of e-content.
There are no hanging chads or Supreme Court challenges looming (yet). But the nation isn't satisfied with electronic voting machines.
Why voting in the U.S. remains disorganized.
With the addition of two new research tools, NASA's repair mission should greatly improve the data gathered by the space telescope.
Bioartificial kidneys seem to work, but can we make enough for everyone who needs one?
Researchers announce a faster way to make hydrogen from cheap biomass.
Nokia's head of R&D discusses technology that could shape the look, feel, and function of mobile devices in the next few years.