IB ITGS

the  global   positioning   system  (GPS), a constellation of satellites that can pinpoint your location within 10 meters or even less anywhere on the planet.

GPS guides U.S. troops and military

Radio broadcasts from the satellites include the signals' precise time,

Facebook must also deal with persistent privacy concerns. When the company first rolled out the News Feed, and any change on a user's page suddenly began scrolling on the screens of anyone who'd added him or her as a friend, the social graph went bonkers: more than 700,000 people joined a user group called "Students Against Facebook News Feed." The company acted quickly to install privacy controls to let people opt out of the information flow, and the crisis cooled, though Marc Rotenberg of the Electronic Privacy Information Center says that setting privacy preferences is still too complicated. The company says that plenty of protections are built in. "Facebook is about replicating the social restrictions of the offline world," says its chief privacy officer, Chris Kelly. The problem is that Facebook is on the Internet, and it's all too easy to circumvent those and dig up private stuff. This is all too clear from the experience of political offspring who seem engaged in perpetual competition to embarrass their parents.

ACCORDING TO THE U.S. Copyright Office, "copyright" refers to a form of protection provided by U.S. law to the authors of "original works of authorship" including literary, dramatic, musical, artistic and other intellectual rights. The owner of copyrighted material generally has the exclusive right to authorize such things as reproducing, distributing and displaying the work.

This means that as soon as you finish a poem, novel or article, you automatically own the copyright and it's yours until you sell or license it to someone else, or until the period of protection ends.

But by giving notice of your copyright--and registering your work on a regular basis--you'll help prevent it from being stolen or misappropriated in the future. Better yet, it will give you an effective weapon to use against violators if you need to.