Content ratings for movies, TV shows and video games aren't helpful. Parents need ways to apply their own values.
The philosophers got it wrong: scientists love new ideas-if they're right.
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.