"Too much of the external costs have been left off the books and it's up to the environmental movement to force them internal. That's going to change everything. Much more than people changing what kind of light bulbs they use, frankly."

"In short, we should bring back extinct animals for the same reasons we protect endangered species: to preserve biodiversity, to restore diminished ecosystems, to advance the science of preventing extinctions and to undo harm that humans have caused in the past."

Would New York City's investment in watershed restoration, in lieu of a water treatment facility, similarly motivate other cities? Could the national Payment for Ecosystem Services scheme in idyllic Costa Rica possibly work anywhere else?

Bill is founder of the grassroots climate campaign 350.org, which has coordinated 15,000 rallies in nearly 200 countries in the past four years. Read on for his thoughts on the Keystone XL pipeline, how environmental organizations can get more done and what he would do if he had my job leading TNC.

The world's growing population -- expected to exceed 9 billion by 2050 -- is predicted to double demands on our planet's dwindling supply of food, fresh water, energy and other resources we can't live without.

Ecosystems perform a wide variety of important services for free. But many of these ecosystems have been degraded or destroyed by human development. Now, communities need to put nature back to work.

Climate change is a citizen's issue; each of us is required to lend a helping hand. That means taking ownership of our urban trees including watering them during the drier summers, forthcoming.

The newest GDP release shows an increase of 1.5 percent in the second quarter of 2012, down from a 1.9 percent growth in the first quarter and three percent growth in 2011. But, as Dēmos continually asks in our Beyond GDP work: What exactly is GDP measuring?

The Carbon Canopy is developing markets that advance forest preservation and sustainable management by compensating landowners for the environmental benefits created by healthy forests.

On October 17, a massive dust storm hit Lubbock, Texas, adding to already significant agricultural and environmental devastation across the South this...

Some U.S. farmers are paid to leave their land wild; others are compensated when weather devastates their cultivated land. Still others receive money ...

Wangari Maathai knew her country's wilderness was priceless. Still, the Nobel Peace Prize laureate -- who died of cancer on Sunday at the age of 71 --...

Why does the Department of Agriculture's Wildlife Services' program spend taxpayers money to kill over 27,000 beavers every year?

Despite rapid and substantial growth in the amount of land and sea designated as protected habitat over the last four decades, the diversity of specie...

The business logic for protecting nature has always been a harder sell than making the case for other green initiatives. Dow is now tackling this issue, working with The Nature Conservancy to try and make the business logic clearer.

Crossposted with TheGreenGrok.com. Does the color green signify nature or dollars ... or both? Time was, economists saw concerns about nature to be la...

Congress's failure to act on global climate change was one of the reasons the diplomatic atmosphere was so chilly last year in Copenhagen. Now, Congress has chilled the atmosphere again.

The development and environment communities must stop viewing their goals as separate or even at odds with each other.

Crossposted with www.thegreengrok.com.We've all heard about peak oil, but is there such a thing as peak water? The concept of peak production in a res...