News tagged with soil pollution

A genetic alternative to fertilizer

Several studies have shown that a lack of nitrogen in soils adversely affects crop yields. The modern use of nitrogen fertilizers has improved yields to meet expanding global food demand, but in some cases ...

dateJun 01, 2012 in Plants & Animals
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Tropical forests are fertilized by air pollution

Scientists braved ticks and a tiger to discover how human activities have perturbed the nitrogen cycle in tropical forests. Studies at two remote Smithsonian Institution Global Earth Observatory sites in Panama ...

dateNov 03, 2011 in Environment
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Nitrogen in the soil cleans the air

Eutrophication harms the environment in many ways. Unexpectedly, nitrogen fertilizer may also be positive for the environment. And even acidic soils, promoting the destruction of forests, can have a positive ...

dateAug 19, 2011 in Environment
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Researchers study threats to white sturgeon

University of Georgia researchers are working to understand why the nation's largest freshwater fish, the white sturgeon, is struggling in northern California's Sacramento-San Joaquin Bay Delta, an environmentally endangered ...

dateAug 08, 2011 in Ecology
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Study probes sources of Mississippi River phosphorus

In their eagerness to cut nitrogen and phosphorus pollution in the Mississippi River and Gulf of Mexico, people have often sought simple explanations for the problem: too many large animal operations, for instance, or farmers ...

dateMay 06, 2011 in Environment
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