ahlam1399
07-12-2016, 12:57 PM
Biomass was rising a decade ago as a carbon-neutral energy. But the industry is sputtering as oil and natural gas booms, and some scientists are questioning if it's actually good for the environment.
أكثر... (http://www.npr.org/2016/07/12/482937940/is-burning-trees-still-green-some-experts-**w-question-biomass?utm_medium=RSS&utm_campaign=news)
أكثر... (http://www.npr.org/2016/07/12/482937940/is-burning-trees-still-green-some-experts-**w-question-biomass?utm_medium=RSS&utm_campaign=news)