Forbes has taken a look at the country's 40 largest cities and declared the most stressful amongst them. The big winner is Chicago, due to the record weekend rainfall, the rising unemployment rate, gas prices, high population density and poor air quality. All of that and more has landed the Windy City in the top spot of America's Most Stressful City list. However, New York isn't far behind, taking the silver at #2 (with Detroit,......