Discover magazine has a top 100 stories list each year. These stories include new scientific breakthroughts, fun facts about math, and many other cool ways of relating these topics to daily life.
This particular entry talks about how combining a GPS system with mathematical methods could help fix traffic jams. If you think logically about a traffic jam, you realize it is pretty simple. After the crash or what not is cleared, the “jam” moves steadily backwards, as the amount of cars piling up is doing so at a faster rate than those who are leaving the jam in the front. The correct speed of incoming cars to leaving cars would have to be reached to allow jams to disperse more quickly.
Check out more of these cool stories at this link. http://discovermagazine.com/2010/jan-feb/39