Tracking

Many companies track your behavior and request information about you without explicitly asking for your permission. Here’s how to combat the trackers.

• By Hanqing Chen

Facebook is launching an aggressive technique to follow people across the Web.

• By Julia Angwin

A New America study ponders privacy for new Internet users in an "age of tracking."

• By Marc Herman

Schools around the nation are 'detracking' classes, putting kids of all achievement levels in the same room. Does that sabotage higher achievers?

• By Julie Halpert