Geo Answer

The World
The World
The answer to our Geo Quiz today is the English town of Harpenden, north of London. It's the hometown of the teenager who used Facebook to invite a handful of friends to her birthday party ? and wound up with thousands of replies from the social networking site. Anchor Lisa Mullins speaks with the birthday girl, who has since canceled her party.
Sign up for our daily newsletter

Sign up for The Top of the World, delivered to your inbox every weekday morning.