Marine phytoplankton take up atmospheric carbon and carry it to the seafloor when they die and sink (a process known as organic carbon sedimentation). This biological carbon pump is a powerful part of Earth's carbon cycle, ...
Earth Sciences
Sep 10, 2024
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Microplastics have raised concerns among scientists and the public in recent years due to their widespread presence and associated health risks. They have been found in every corner of the planet, from mountain peaks to the ...
Ecology
Sep 9, 2024
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As Utah's Great Salt Lake shrinks, exposing more of its playa, concerns grow about the dust the dry lakebed emits. But scientists lack the data to fully understand what pollutants are present in these airborne sediments.
Earth Sciences
Sep 6, 2024
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There are some pretty strange ingredients in cosmetics and skin care products. One example is snail mucin—also known as snail slime—which is used for its moisturizing and antioxidant properties. But researchers reporting ...
Biochemistry
Sep 5, 2024
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Sediment is any particulate matter that can be transported by fluid flow, and which eventually is deposited.
Sediments are most often transported by water (fluvial processes) transported by wind (aeolian processes) and glaciers. Beach sands and river channel deposits are examples of fluvial transport and deposition, though sediment also often settles out of slow-moving or standing water in lakes and oceans. Desert sand dunes and loess are examples of aeolian transport and deposition. Glacial moraine deposits and till are ice transported sediments.
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