SunPower Turns to Gamification to Engage with Customers

Companies worried about engaging customers may learn a thing or two from SunPower, whose new online contest has boosted its Facebook community by nearly 70 percent. Read More

How Many Congressmen Does It Take To Screw Up a Light Bulb?

Congress this week will take up a bill that would reverse new federal lighting efficiency standards -- even though it's already led to the creation of new technologies and are saving households billions of dollars a year. Read More

Sprint Earns Top Grade for Cutting Junk Mail, Using Greener Paper

ForestEthics ranks credit card, telecom and insurance companies on their paper use and policies. Read More

SC Johnson Settles Lawsuits Over Greenlist Logo

SC Johnson settles two lawsuits over its Greenlist logo, promting it to rethink how to communicate product improvements. Read More

A Closer Look at the Green City Index

Why did some cities nail top ratings in Siemens' new Green City Index for North America, while others tanked and still others weren't counted at all? NRDC's Kaid Benfield takes a deep dive into the scores. Read More

IBM Tops List of World's Most Energy Efficient Supercomputers

IBM dominates the Green500 Top 10 list of the most energy efficient high-performance computers in the world and claims the No. 1 spot for a second time in less than a year. Read More

San Francisco Named North America's Greenest City

San Francisco bested contenders that included Vancouver, New York, Seattle, Denver and Boston in a study conducted by the Economist Intelligence Unit and commissioned by Siemens. Read More

What's Behind the Big Sustainability Push at Unilever

The VP of sustainability at the consumer-goods giant talks about the power of collaboration, the difficulty of changing individuals' behavior, and why Americans in the shower is one of the biggest environmental hurdles Unilever faces. Read More

First Take: BPA Strikes Again, Has VW Turned to the Dark Side?

The latest BPA study finds it causes male deer mice to act like females; Greenpeace accuses VW of turning to the Dark Side because of its environmental and lobbying record; and GM pledges to find a way to achieve 56.2 mpg. Read More

How M&S Found Sustainability & Profits in a Carbon-Neutral Bra

 No company approaches sustainability more comprehensively — or more creatively — than the British retailer Marks & Spencer. Read More