Arctic lakes are vanishing in surprise climate finding

The Arctic is no stranger to loss. As the region warms nearly four times faster than the rest of the world, glaciers collapse, wildlife suffers and habitats continue to disappear at a record pace.

Microfluidic device erosion reduced with cavitation bubbles

Researchers embarked on a multidisciplinary project to determine how cavitation bubbles within micro- or nano-structures could mitigate surface erosion and enhance the efficiency in microfluidic mixing devices, often used ...

Corn belt farmland has lost a third of its carbon-rich soil

More than one-third of the Corn Belt in the Midwest—nearly 100 million acres—has completely lost its carbon-rich topsoil, according to University of Massachusetts Amherst research that indicates the U.S. Department of ...

Tree-planting world record set in Philippines

Philippine environmentalists have set a world record for the most trees planted simultaneously, kickstarting an enormous reforesteration programme, organisers said Thursday.

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For morphological image processing operations, see Erosion (morphology) For use of in dermatopathology, see Erosion (dermatopathology)

Erosion is the removal of solids (sediment, soil, rock and other particles) in the natural environment. It usually occurs due to transport by wind, water, or ice; by down-slope creep of soil and other material under the force of gravity; or by living organisms, such as burrowing animals, in the case of bioerosion.

Erosion is distinguished from weathering, which is the process of chemical or physical breakdown of the minerals in the rocks, although the two processes may occur concurrently.

Erosion is a noticeable intrinsic natural process but in many places it is increased by human land use. Poor land use practices include deforestation, overgrazing, unmanaged construction activity and road-building. Land that is used for the production of agricultural crops generally experiences a significant greater rate of erosion than that of land under natural vegetation. This is particularly true if tillage is used, which reduces vegetation cover on the surface of the soil and disturbs both soil structure and plant roots that would otherwise hold the soil in place. However, improved land use practices can limit erosion, using techniques such as terrace-building, conservation tillage practices, and tree planting.

A certain amount of erosion is natural and, in fact, healthy for the ecosystem. For example, gravels continuously move downstream in watercourses. Excessive erosion, however, does cause problems, such as receiving water sedimentation, ecosystem damage and outright loss of soil.

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