While not top-ranked, there are business to watch in Brazil, Russia, India and China. 

What's true for the iPhone rings true for others.

In this Q&A, the author of "The Upside of Down" shares how his concept of societal resilience can help companies prepare for change.

Footwear company's greenENERGY Fund invests in a portfolio of efficiency projects that target a strict 20 percent annual return on capital.

While technology's productivity benefits may eliminate certain jobs, advances in mobility, analytics and robotics are inspiring a new age of efficiency and innovation.

Data analytics, mobile apps will be central to success car-sharing networks and other sustainable transportation alternatives.

In India, advanced information technologies coupled with SUVs are rewriting the rules for sustainable rural health care.

Our resident career coach helps a freelance sustainability consultant improve his answer to the question: "What do you do?"

Converting waste from one company into a feedstock stream for another can generate revenue while reducing virgin material and energy use.

Cheryl Martin, deputy director of the Advanced Research Project Agency-Energy talks energy innovation at the 2013 VERGE conference in Boston.