Royal Caribbean Cruises and the corporate parent of Travelocity are among the travel industry heavyweights that are lining up behind standards set by the Global Sustainable Tourism Council.

Although it's a festival of excess in many ways, Super Bowl XLVI, taking place this Sunday, reveals how far the NFL -- and pro sports in general -- has come in considering and trying to reduce their environmental impacts.

California joins New York and Washington in requiring insurers that that write in excess of $300 million in premiums to respond to the National Association of Insurance Commissioners' Climate Risk Survey.

The National Park Service is cutting energy consumption for lighting on the National Mall by as much as 65 percent with the retrofit of 174 street lamps.

To lower its carbon footprint, White Wave Foods is tackling methane emissions, carbon sequestration and utilities, such electricity and gasoline.

After surviving -- and thriving -- in five of the roughest economic years the country has known, there's a lot we should have done differently when we opened the doors of our green packaging company. Here's to helping others repeat the same mistakes.

A new report shows that U.S. cities can save billions in costs -- while cleaning waterways and green neighborhoods -- by leveraging private investment in green infrastructure.

The Princeton Review, Sierra Magazine, and the Association for the Advancement of Sustainability in Higher Education have teamed up to promote a new tool that makes it free and relatively easy for any education institution to report its environmental impacts.

The company has now reduced its global waste generation by 50 percent since 2005, far surpassing a goal to pare down waste by just 15 percent by 2011.

The market for tapping value from recyclable waste streams is caught in a series of binds that keep it from scaling, even though countless companies have achieved major benefits from cutting waste out of the loop.

A new book from Trucost executive Cary Krosinsky looks at how sustainable investment in an era of growing resource scarcity can yield significant opportunities for boosting your portfolio's performance.

Siemens and Johnson Controls win energy performance contracts from the U.S. Army totaling more than $60 million for solar, wind and retrofit projects to improve efficiency.

Just how much energy does the U.S. military use, what the costs in dollars and the risk to soldiers, and how can they all be reduced? The American Council On Renewable Energy and Advanced Energy Economy are working with the Defense Department to answer those questions.

Last year, Google invested more than $900 million in clean energy projects. But does it have an energy policy? Does it need one?

Walmart in particular marks a big leap forward, coming up from 15th place three months ago to land in third place. Generating green power on-site -- where Walmart is the second-biggest green power creator -- is what helped move the retailer up.

Research by Verdantix pegs sustainability spending to grow 20 times faster than the GDP in 2012 with continued growth averaging 16 percent a year through 2015.

From big players like IBM and SAP to smaller startups like C3, vendors of energy and carbon management software have a big challenge to capture a slice of the broad demand for companies of all sizes.

By all accounts, the electric vehicle industry appears to be a market on the brink of mainstream adoption, yet they're still falling short of expectations. What's the missing element?

Keeping in line with a mandate to trim its data centers from about 200 to 20, the Army recently awarded its first cloud computing contract to several contractors, including Microtech, Lockheed Martin Corp. and IBM.

The CDP's brand-new 2012 supply chain report tracks the impressive economic savings that companies that manage their scope 3 emissions are earning -- but also highlights how few companies are taking advantage of these benefits.