Volcanic ash is no ordinary dust: It gets injected into the atmosphere, climbs to the stratosphere, impacts climate, powders roadways and clogs jet engines.
Earth Sciences
2 hours ago
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17
Clay. It's been used for centuries to make pottery, decorative beads, and earthen houses. And it has a firm spot in many beauty regimes.
Earth Sciences
Sep 29, 2023
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2
Tailings, the waste left after extracting precious and critical minerals, often contain harmful chemicals and heavy metals that can pollute soil, water, and even crops. There are over 1,800 tailings storage facilities around ...
Earth Sciences
Sep 28, 2023
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36
Water films are virtually present on all minerals exposed to air moisture, from dry soils to atmospheric dust. The number of water layers that minerals can store is directly controlled by atmospheric humidity.
Analytical Chemistry
Sep 26, 2023
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The demand for rare raw materials, such as cobalt, is fueling the exploration of the deep-sea floor for mining. Commercial deep-sea mining is currently prohibited in areas beyond national jurisdiction, but companies are permitted ...
Plants & Animals
Sep 19, 2023
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13
Nearly 6,000 different minerals are known to exist on Earth, but after more than 50 years of investigations, only 161 minerals have been recorded on Mars—a dramatically lower number for a planet that shares much in common ...
Planetary Sciences
Sep 7, 2023
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109
A diet including a carefully selected assortment of microgreens may help address an individual's nutritional deficiencies, according to a Penn State researcher who led an international team that evaluated the mineral content ...
Agriculture
Aug 30, 2023
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4
Could blending of crushed rock with arable soil lower global temperatures? Researchers of Mainz University have studied global warming events from 40 and 56 million years ago to find answers. Their research paper has recently ...
Earth Sciences
Aug 29, 2023
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73
Glacial cyclicity of the Earth has often been considered on 100,000 year timescales, particularly for the Late Pleistocene (~11,700 to 129,000 years ago) swapping between periods of extensive polar and mountain glacier ice ...
It is a scientific certainty that Mars was once a much different place, with a denser atmosphere, warmer temperatures, and where water once flowed. Evidence of this past is preserved in countless surface features, ranging ...
Planetary Sciences
Aug 18, 2023
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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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