Sony's announcement that it will no longer make Betamax videocassettes raises the obvious question: what took them so long?
We know that online peer pressure is powerful. But what we don't know is whether that pressure is driving real change
Efforts to take down the terrorist organization's Web sites and expose its supporters could interfere with carefully planned law enforcement operations
Beamed power could create a low-cost paradigm for access to space
New kinds of dogs, goats and monkeys are being made quickly, although scientists voice worries about ethics and whether the methods should be used on humans
Air jets and sound waves can be used to levitate objects. But the strangest way of all taps the quantum effects of superconductors. Game developer, space traveler and friend of Scientific American Richard Garriott glides through the demonstration.
The genetic-testing company's real goal is to hoard your personal data