Engineering
Water is the most essential resource for life, for both humans and the crops we consume. Around the world, agriculture accounts for 70% of all freshwater use.
Aug 12, 2022
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Engineering
After water, concrete is the most widely used substance on Earth. With applications from housing and industry to coastal defense and infrastructure, concrete and cement are at the cornerstone of life, quite literally.
Jul 19, 2022
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Engineering
Can a bridge withstand an earthquake? One of the big unknowns is how far a bridge might settle from seismic shaking, especially if the shaking triggers a quicksand-like soil response called liquefaction.
Jul 7, 2022
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Engineering
This year has seen one of Australia's worst flood disasters on record in the eastern states, with 23 people killed, thousands left homeless, and a damage bill expected to top $1.5 billion.
May 24, 2022
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Business
Wide-ranging use of smart technologies is raising global agricultural production but international researchers warn this digital-age phenomenon could reap a crop of another kind—cybersecurity attacks.
May 23, 2022
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Energy & Green Tech
Installing solar panels along a part of Saudi Arabia's west coast could generate enough rainwater to meet the annual consumption needs of five million people. An international team developed a weather forecasting model and ...
Apr 13, 2022
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Automotive
For years Americans have been told autonomous technology was improving and that driverless vehicles were just around the corner.
Mar 16, 2022
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Energy & Green Tech
Silflower was among native plants that blanketed the vast North American prairie until settlers developed farms and cities. Nowadays confined largely to roadsides and ditches, the long-stemmed cousin of the sunflower may ...
Nov 4, 2021
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Energy & Green Tech
Although they offer a very promising solution for capturing solar energy, perovskite solar cells contain lead, which is toxic to the environment and a serious health hazard. EPFL scientists have now found a very elegant and ...
Jul 15, 2021
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Robotics
A new robot—named WomBot—that can be used to explore and study wombat burrows is presented in a study published in the journal SN Applied Sciences.
Jun 8, 2021
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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.
This text uses material from Wikipedia, licensed under CC BY-SA
