Eleven and a half years can be a long or a short period of time, depending on your evaluation perspective.

A few decades ago, the sustainability movement lacked tools, so I started making some. Assessments. Indicators. Workshops. Even sustainability songs: They were communication tools.

Something doesn’t quite add up in the world of venture capital (VC). Most startups are founded by millennials, 76 percent of whom believe that businesses have the power to make a difference in the world. So, why aren't most startups socially responsible?

Americans generally don’t like to carpool. The rates of carpooling in the United States actually have dropped over the past couple of decades despite the efforts of transportation planners.

After three snow storms in as many weeks, deep snow is covering the ground everywhere in Maine and planting season seems impossibly far away.

On a finite planet, endless economic growth is impossible. There is also plenty of evidence that in the developed world, a continued increase of GDP does not increase happiness.

It seems like every month for years, some company in the digital set has committed to, or better yet, achieved 100 percent renewable power supply.

My father says, "Measure twice, cut once."

In nature, diversity builds ecosystem health, productivity, longevity and resilience. So, too, in communities: Sustainable economic and social systems need to be diverse and inclusive in every respect.

A century ago, fresh produce had no choice but to be local and seasonal, but technology changed all of that.