News tagged with science society
'Soil dipstick': A thermometer for the Earth
Space & Earth / Earth Sciences
Oct 01, 2009 |
2.6 / 5 (5) |
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According to climate change experts, our planet has a fever -- melting glaciers are just one stark sign of the radical changes we can expect. But global warming's effects on farming and water resources is still a mystery. ...
Tree species composition influences nitrogen loss from forests
Mar 16, 2009 |
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Throughout the world, nitrogen compounds are released to the atmosphere from agricultural activities and combustion of fossil fuels. These pollutants are deposited to ecosystems as precipitation, gases, and particles, sometimes ...
Looking for water on Mars
Space & Earth / Space Exploration
Sep 28, 2008 |
3.5 / 5 (4) |
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NASA's Phoenix Scout Lander reached Mars on May 25,, opened a soils lab, and started looking for water. Phoenix uses a robotic scoop arm to deliver regolith samples to the suite of instruments aboard the Lander--with one ...
Illinois Soil Nitrogen Test measures microbial nitrogen
May 11, 2009 |
4 / 5 (1) |
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Contrary to the prevailing view, cereal crops derive the majority of their nitrogen from the soil, not fertilizer. Soils differ considerably in microbial activities that determine nitrogen-supplying power, and these differences ...
Impact of floods on soils
Apr 08, 2009 |
4 / 5 (1) |
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A recent study conducted in the Midwestern United States examined the effects of harsh wet conditions on both cultivated and uncultivated soils, vastly advancing the knowledge of water's effects on aggregation. Soil aggregation ...
Understanding phosphorus in soils is vital to proper management
Feb 04, 2009 |
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Phosphorus is one of the key nutrients that can cause algal blooms and related water quality problems in lakes, rivers, and estuaries worldwide. Phosphorus entering waters originates from a variety of sources. Agricultural ...
Organic soils continue to acidify despite reduction in acidic deposition
Jan 12, 2009 |
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Following the Clean Air Act Amendments of 1970 and 1990 acidic deposition in North America has declined significantly since its peak in 1973. Consequently, research has shifted from studying the effects of acidic deposition ...
Using neutron-computed tomography techniques, scientist measure in-situ water content
Sep 08, 2008 |
3 / 5 (2) |
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Scientists at the University of California in Davis present results from a newly developed non-invasive technique that uses thermal neutron attenuation to measure spatial and temporal distribution of water in soils. The study, ...
