Michigan

General Motors' turnaround has been pretty dramatic. It's only been a couple years since the government bailed the company out. That bailout has turned into a major issue in the upcoming Republican primary in Michigan.

Republican presidential candidates are spending millions on the state's airwaves. But those ads are more and more often not being paid for by official campaigns but by giant political action committees -- super PACs.

In suburban Detroit, there's a speed limit sign telling drivers to slow down to 25 mph on school days -- but it's a little different than the signs you might be used to seeing in your neighborhood.

Sustainable thinking often requires the luxury of a long term perspective: If you don't have fuel to prepare the evening's meal, whether the...