He worried about its future. Roosevelt wrote: "I recognize the right and duty of this generation to develop and use the natural riches of our land.

VOA: special.2010.08.12

This so-called 'bio-gas' is burned like natural gas in a small electric power plant right on Vander Haak's farm.

VOA: standard.2010.02.23

Israel says it will not build new settlements, but it reserves the right to build in existing communities to accommodate "natural growth."

VOA: standard.2009.05.29