Philippe Matthews Show Guru Advice, Author Reviews, Tech Reviews, Entertainment News

The steady improvement in speed and power of modern electronics may soon hit the brakes unless new ways are found to pack more structures into microscopic spaces. Unfortunately, engineers are already approaching the limit of what light—the choice tool for "tweezing" tiny features—can achieve

John Blackstone reports on an artificial retina that could restore partial vision to the blind may soon be approved by the FDA. Then, Erica Hill talks to Dr. Jennifer Ashton about how the device works and how it could change the lives for people with certain types of blindness