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The Underhill Farm in Somerset, England, is the picture of rural tranquility. But the lush green pastures disguise the fact that farms like this are contributing to global warming. That's because just one cow can produce up to 500 liters of methane
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Beginners. One of the things I really enjoy is gardening. I have a patch of vegetable garden in one of the corners of our back yard. It has four raised beds. Two of these are wide wooden boxes which my husband put together. In these I put a mixture o
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The United States plans to spend $600 million in coming years to propel development of renewable fuels and other new energy solutions. The funding goes along with millions that private investors are spending to find ways to cut the nation's dependen
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Dairy farmer, researchers look for ways to power cars with bio-gas from cattle Tom Banse | Bellingham, Washington 23 February 2010 Dairy owner Darryl Vander Haak turns cow manure into 'bio-gas' which burns like natural gas in a small electric power p
VOA标准英语2010年(二月)
The Underhill Farm in Somerset, England, is the picture of rural tranquility. But the lush green pastures disguise the fact that farms like this are contributing to global warming. That's because just one cow can produce up to 500 liters of methane g
自然百科2008年
The United States plans to spend $600 million in coming years to propel development of renewable fuels and other new energy solutions. The funding goes along with millions that private investors are spending to find ways to cut the nation's dependenc
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