Medicine: New imagers offer an unprecedented view.
Financial algorithms could boost utilities' efficiency.
An anonymous programmer has found a way to decrypt Microsoft Reader e-books, spurring digital-rights debate.
Efforts to find Peace Corps-like roles for technologists gain momentum.
With research on embryonic stem cells mired in controversy, adult stem cells are quietly providing the basis for striking advances toward new therapies.
A powerful concept known as "sync" coordinates data held in your pocket, your PC and repositories worldwide.
Breaking into networks is more than a joyride-it's the coming mission of criminals, industrial spies and terrorists. Can new security techniques stop them?