The surprising origin of the "@" sign and how it went from obscurity to communication rock star.

From grocery self-checkout to your home accounting software to "Godzillas" working the assembly lines, technology is fundamentally changing the American workforce.

The United States Postal Service could lose as much as $10 billion in the fiscal year closing at the end of this month. Sure, email and the web have made a huge change in how we communicate, but could a new and improved postal system emerge?

A new report shows that the number of Facebook users in the last month has fallen.