You could kill a frog if you print a frog. Such is the conundrum of 3D printing, as some of the more commonly used printing materials are aquatically toxic if poured down the drain.

In the past several years, publicly traded companies increasingly have taken very public positions on sustainability issues.

“Why does it always have to be snakes?” Indiana Jones protested in "Raiders of the Lost Ark" as he hurtled into an Egyptian underworld.

Former Secretary-General of the United Nations Kofi Annan created the U.N. Global Compact (UNGC) 17 years ago to align corporations on 10 universal sustainability principles and "give globalization a human face," said Lise Kingo, UNGC’s CEO and executive director.

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

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.

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

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.

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.

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