Once a U.S. Air Force base populated by concrete buildings and gun-toting soldiers, McClellan is now an eco-friendly business park home to a menagerie of green companies.

McClellan Jet Services is Sacramento’s one-stop shop for all things airplanes.

If you’ve ever had to plan an office move, or even live through one, consider the challenge of doing 10 to 20 at the same time. That’s the task facing architects, construction companies and interior designers when governments consolidate far-flung operations under a single roof.

Chris Huppe spent more than a dozen years working on better ways to use the green waste from his landscape maintenance company.

Charles Rieger is building a case for going green. As the executive director of the Solano Center for Business Innovation, the umbrella organization for the newly formed Solano Green Business Council, it’s Rieger’s job to plant the seeds for a greener economy.

If there is one thing a business owner hates, it is uncertainty. Planning for the future — or even managing the present — cannot effectively happen unless the person signing the checks knows the rules of the game. But when it comes to California’s efforts to reduce greenhouse gas emissions, uncertainty is about the only thing employers can count on right now.

Unless you get on the wrong airplane or harbor a relentless cancer, doctors say you can pretty much count on living to be 90. A hundred years ago, it was age 50. For many women, that would have meant dying before menopause. Now it means living half a lifetime with hormones on the fritz.

In a growing cluster of offices and labs south of downtown Davis, researchers at Novozymes Inc. are building better microbes.

Transforming the Power Inn area bears a striking resemblance to the way an ancient lake transforms into a meadow. It takes a lot of infill, it happens over decades and the result can be a jewel that brings new vitality to the landscape.

Smaller landfills, fewer forest fires and more renewable energy — these are just a few perks California would get from increasing biomass energy, some experts say.