traffic
Air Pollution and Our Health
When most people think of unhealthy air, they think of a stifling, summer day, plagued by high ozone levels and a thick layer of smog over the Twin Cities. However, Minnesota’s worst recorded air alert occurred during the winter of 2005, and ozone was not the culprit. Instead, a stagnant air mass trapped fine-particle pollution near the ground.
Gridlock
You are not in a parking lot, but you may as well be. It is five-o-clock in the evening. Interstate 394 is packed with vehicles, stretching past the bend in the road far ahead. The red brake lights of the stationary stream of cars ahead flash intermittently, suggesting only occasional movement. A woman next to you is fuming behind the wheel of a Ford Explorer and laying on her horn. "Sure lady, that will help," you think. Try to breathe and relax. You are going to be here for a long time.
