Best farming practices for soil health vary by region

Farmers can use a variety of practices to keep their soils healthy. Some of these practices include not tilling the land, planting cover crops between growing seasons and rotating the type of crop grown on each field.

OSIRIS-REx mission researchers detail history of asteroid Bennu

NASA's OSIRIS-REx spacecraft mission, launched on Sept. 8, 2016, is the first U.S. mission designed to retrieve a pristine sample of an asteroid and return it to Earth for further study. The mission's target is Bennu, a carbon-rich ...

Iron in the fire: Researchers pinpoint how iron deposits form

University of Alberta scientists have uncovered the formation mechanism behind a class of mineral deposits that have been hotly contested until now. The findings shed new light on how iron deposits, among others, form—and ...

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Mineral

A mineral is a naturally occurring solid formed through geological processes that has a characteristic chemical composition, a highly ordered atomic structure, and specific physical properties. A rock, by comparison, is an aggregate of minerals and/or mineraloids, and need not have a specific chemical composition. Minerals range in composition from pure elements and simple salts to very complex silicates with thousands of known forms. The study of minerals is called mineralogy.

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