1.   Curbing these gases requires intensive energy conservation and the promotion of cleaner energy sources such as solar and wind power.

2.   Instead, a cleaner energy source had to be discovered, he decided.

3.   Poorer countries were exempted from such goals and were called on only to take part in efforts to use cleaner energy sources that would be sponsored by richer nations.

4.   Plans include increasing the use of natural gas, a cleaner energy source than coal, which is widely used throughout China.

5.   Buchsbaum said the plants should cut their mercury emissions, with an eye on eliminating them, by turning to cleaner energy sources such as natural gas.

6.   Canada held with the United States that transfering cleaner energy technologies to the Third World requires private investment.

7.   Despite recent differences over global warming, the European Union and the United States committed themselves Monday to working more closely on developing cleaner energy sources.

8.   Developing countries, it urged, should adopt cleaner energy technologies.

9.   He said while the sale had substantial economic benefits for Canada, it also would help China meet a pressing need for cleaner energy production.

10.   The issue is crucial because developing countries lack the investment resources and technology to convert economies heavily dependent on high-pollution industries to cleaner energy production.