The Green 50

Do Good, Get Rich: The Eco-Advantage

Every few years or so, American companies and consumers embrace the concept of green business. But something seems different about our current green awakening. This time, the action is being driven as much by markets as morality. Here's a look at 50 of the most intriguing companies that are helping to drive today's green revolution. You might say they've found a way to do good and get rich.