By a variety of measures, both obvious and not so obvious, we are rapidly depleting our natural resources and overwhelming the bio-systems that sustain life on this planet.

To be authentically sustainable means to be vegan. No matter how animals are grown, growing plants to feed humans is easier on the earth than growing plants to feed animals and then turning those animals into food.

WASHINGTON -- An Arizona Tea Party-backed bill that would gut government-run green programs in the state may have the support it needs to go before Go...

If climate change is humanity's greatest challenge, a close second must be uniting people around the common goal of overcoming it.

A so-called "free-market" economic system lacking in environmental protections is tantamount to a social system deficient of civil and human rights protections for minoritized peoples.

It is time to review our foundational values and documents and establish why sustainability is very much based on American values that transcend today's politicized political climate.

Water quality in the New York Harbor, the Long Island Sound and the Hudson and East Rivers has improved dramatically in recent decades thanks to the success of national, state and local-level policies and regulations.

Biking represents a simple activity and lifestyle change that could affect so many of the big, societal issues we face today, as well as some that are not given the priority they should, such as community-building and connection with nature.

We are now part of a fast changing global economy that will require constant adjustments if we are to take full advantage of the talents of our people. It is not acceptable to passively acquiesce to what is starting to look like permanently high levels of unemployment.

There can be no quick fixes, no magic bullets and no wearisome blame games. A conversation about what constitutes an enduring economy is something that we all have a vested interest in.

Today humanity is a vast system of seven billion, with enormous technological powers and unprecedented demands. Its divorce from nature is approaching a tipping point: in its present form the human system is critically unsustainable.

After a tornado destroyed 95% of the town, Greensburg, Kansas reinvented itself by striving to become the greenest community imaginable.

Before approval of the World Bank's request for a $86.2 billion general capital increase, civil society should at least have a draft of an energy strategy in which the bank stops funding coal.

Canada's banking system is one of the best regulated, and modulated, in the world, which is why no Canadian financial institution went bust during the 1930s Depression.