Presidential candidate John McCain wants to hold a government-sponsored contest to invent an efficient car battery. But some criticize the idea as a campaign gimmick. Scott Jagow talks to economic correspondent Chris Farrell.

There's a growing backlash against this data mining by people who are trying to keep their online lives private. Here are some tips to help.

"XOXO" has long been the symbol for a kiss and a hug, but a pair of writers say that it's commonly becoming used as a way to sign-off an email message -- even at the workplace. How does your digital sign-off affect how others perceive you at the office?

Technology is -- by some economists' accounts -- causing a hollowing out of middle income jobs.