If you want to spend some time getting to know Chicago with, perhaps, a big prize at the end, a three-day scavenger hunt is on across the city this weekend. The fourth annual eAtlas Scavenger Hunt ...

The promised reward of this new enterprise, for the first team to solve 20 Chicago-themed clues, is a literal payoff — a $25,000 first prize. Another big difference in this scavenger hunt ...