Gwen Ruta

A new partnership between EDF and AT&T dives into the looming challenge of water shortages for thirsty commercial buildings. Through a water analysis, AT&T will potentially reduce the water its facilities use by millions of gallons per year.

As water becomes a more expensive, and sometimes contentious, commodity in many regions like the drought-stricken southwest, managing thirsty commercial buildings is going to become an increasingly important challenge for building owners.

Even though the world is rightly castigating BP for the devastation in the Gulf of Mexico, there is still important work to be done in partnerships between environmental groups and corporations -- even corporations like BP.

If European countries give a multi-billion euro handout to Greece to stabilize its economy, will they still be able to meet their climate commitments? It turns out that investing in clean energy can make it possible.

Building a healthy, prosperous green energy economy sounds like the kind of thing that deserves media attention. So call me a grumpy environmentalist, but why do we have to wait for April 22 each year to hear about it?

Thomas P. Lyon's latest book, "Good Cop/Bad Cop" is an attempt to answer the question that I hear all the time.

To accelerate energy efficiency, we need to capture the imagination of individuals from college dorm rooms to corporate boardrooms across the country.

Frankly there's a lot of good and some not good enough. With Wal-Mart's release of its 2009 sustainability report today, Environmental Defense Fund, which is working with the firm on its sustainability initiative, shares its perspective on Wal-Mart's progress and the new report.