One tragic example of the loss of forests and then water is found in Ethiopia. The amount of its forested land has decreased from 40 to 1 percent in the last four decades. Concurrently, the amount of rainfall has declined to the point where the country is rapidly becoming a wasteland.

You're going to see new processes that utilize waste as the source of energy, so there's no petroleum consumed in the process - that makes the energy balance uniformly positive.

I work to promote the idea of sustainable capitalism driven by long-term considerations rather than quarterly profits, which seeks to better people's lives and the planet rather than destroy them.

The truth is that we're at a critical juncture in the history of our species and if we don't act soon, we could inhabit a world we don't recognize anymore.

We are running out of time, we must have a planetary solution to a planetary crisis.

The oil industry has outpaced the building of a public consensus of the implications of climate science.

The more deeply I search for the roots of the global environmental crisis, the more I am convinced that it is an outer manifestation of an inner crisis that is, for lack of a better word, spiritual... what other word describes the collection of values and assumptions that determine our basic understanding of how we fit into the universe?