Meredith Schafer presented the findings at a recent meeting of the Ecological Society of America.

VOA: special.2010.09.14

Let's make the red light the symbol of 'go.'" And now with the ecological movement it would be very difficult to make the green light the symbol of "stop," and in any case all sorts of complications would arise. Right?

我们来假设，红灯的意思是出发“,那么难道,绿灯的意思是停止吗？,这样会引起各种不必要的麻烦？

耶鲁公开课 - 文学理论导论课程节选

They said no one wanted to hear that industrial companies could cause great ecological damage.

VOA: special.2010.03.14

He says the global economy must change to a sustainable system now before social issues and ecological degradation become overwhelming.

VOA: standard.2010.01.23

"Whether it's the fight against international terrorism, whether it's cooperation in space, exchanges in health and ecological sphere;

VOA: standard.2010.05.07

(SAYING) "If the mangroves disappear, fishing will be in crisis and the ecological balance will be disrupted."

VOA: standard.2010.03.29

"Climate change challenges us all to find a new development paradigm that balances economic growth and long-term prosperity with social progress and ecological sustainability.

VOA: standard.2009.09.01

Bhutan's main research center collects a wide variety of data to measure this, including things like psychological well being, good governance, ecological diversity and living standards.

VOA: standard.2009.09.14

When Bill McKibben wrote "The End of Nature" 20 years ago, he thought that if he simply pointed out ecological problems, people would do something about them.

VOA: standard.2010.04.21

Well,we want to look to your societies, and we want to help Muslim-majority communities develop the capacity to meet economic,social, and ecological challenges through science,technology, and innovation."

VOA: standard.2009.11.03