Diseases, Conditions, Syndromes

Researcher's surprising finding could lead to glanders vaccine

(Medical Xpress)—Apichai Tuanyok dedicated several years to working on a bacterial pathogen in Canada, but his breakthrough occurred in Flagstaff with an unexpected finding on a routine lab report.

Diseases, Conditions, Syndromes

Neglected tropical diseases -- momentum must be continued

This week's edition of The Lancet sees the first in a four-part Series on Neglected Tropical Diseases (NTDs) -- conditions which almost exclusively affect the world's poorest people, namely those 2.7 billion people living ...

Diseases, Conditions, Syndromes

Joplin toll rises to 151; some suffer from fungus

(AP) -- The death toll from the tornado that destroyed much of Joplin has risen to 151, and three of the latest victims suffered from a rare fungal infection that can occur when dirt becomes embedded under the skin, authorities ...

Diseases, Conditions, Syndromes

The war on microbes

The outbreak of a new foodborne bacterial strain wreaking havoc in Germany is a reminder of the fast-changing nature of microbes and the dangers they pose to society. University of Arizona researchers are developing innovative ...

Diseases, Conditions, Syndromes

Pathogenic soil bacterium is influenced by land management practices

Researchers from Menzies School of Health Research in Darwin, Australia have found that the soil bacterium Burkholderia pseudomallei, which causes the emerging infectious disease melioidosis in humans and animals, is associated ...

Diseases, Conditions, Syndromes

Pesticide exposure found to increase risk of Parkinson's disease

(PhysOrg.com) -- The fertile soil of California's Central Valley has long made it famous as one of the nation's prime crop-growing regions. But it's not just the soil that allows for such productivity. Crops like potatoes, ...

Diseases, Conditions, Syndromes

Scientists reveal how natural antibiotic kills tuberculosis bacterium

A natural product secreted by a soil bacterium shows promise as a new drug to treat tuberculosis report scientists in a new study published in EMBO Molecular Medicine. A team of scientists working in Switzerland has shown ...

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Soil

Soil is a natural body consisting of layers (soil horizons) of mineral constituents of variable thicknesses, which differ from the parent materials in their morphological, physical, chemical, and mineralogical characteristics. It is composed of particles of broken rock that have been altered by chemical and environmental processes that include weathering and erosion. Soil differs from its parent rock due to interactions between the lithosphere, hydrosphere, atmosphere, and the biosphere. It is a mixture of mineral and organic constituents that are in solid, gaseous and aqueous states. Soil particles pack loosely, forming a soil structure filled with pore spaces. These pores contain sol solution (liquid) and air (gas). Accordingly, soils are often treated as a three state system. Most soils have a density between 1 and 2 g/cm³. Soil is also known as earth: it is the substance from which our planet takes its name. Little of the soil composition of planet Earth is older than Tertiary and most no older than Pleistocene. In engineering, soil is referred to as regolith, or loose rock material.

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