There's a real reason shows like Are You Smarter Than a 5th Grader? and websites that test our vocabularies are so popular: We may be geeks, but we are forgetful geeks. While we all learned world geography in grade school most of us take a few seconds to find even the most popular cities in the world on a map. Don't believe me? Check out the Traveler IQ Challenge, a site that tests your Read more