Creative, driven, careful

The big question(s) they ask at GM. Also, 7 other things worth knowing today.

One of the most intriguing things about Mary Barra, the CEO and chairman of General Motors and thus the head of the largest woman-run company in America, is the way she rose through the corporate ranks.

Barra has spent her entire career at GM, starting as an 18-year-old intern when she was earning her bachelor's degree in electrical engineering at Ketter…