Ethiopia says mega-dam doubles electricity output
Ethiopia said it has more than doubled electricity production from its controversial mega-dam on the Blue Nile after two more turbines started operations.
Aug 28, 2024
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Energy & Green Tech
Ethiopia said it has more than doubled electricity production from its controversial mega-dam on the Blue Nile after two more turbines started operations.
Aug 28, 2024
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Energy & Green Tech
In a new study assessing how climate change might alter hydropower generation across the continental United States, researchers show that except for some parts of the Southwest, hydropower generation is expected to rise in ...
Aug 21, 2024
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Engineering
An eco-friendly technology inspired by plant and animal mechanisms has been developed in South Korea for the first time. The portable moisture-harvesting system collects moisture from the air, purifies it, and produces drinkable ...
Aug 20, 2024
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Business
A US judge has found that Google is a monopoly and has used this dominance to reinforce its market position.
Aug 18, 2024
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Energy & Green Tech
Hydrogen is a fuel alternative that is becoming increasingly interesting for heavy-duty vehicles. Hydrogen-powered vehicles only emit water vapor as exhaust, and if the hydrogen is produced using renewable energy, it is completely ...
Aug 14, 2024
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Energy & Green Tech
Anahi Jorge, 23, works for a lithium extraction company in Argentina, earning four times the salary of a local government worker in her village of Susques.
Aug 14, 2024
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Machine learning & AI
Clouds play a pivotal role in the Earth's climate and weather. They form in a diversity of distinct patterns and types that can have profoundly different impacts on things such as the water cycle and how radiant energy moves ...
Jul 31, 2024
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Water is a ubiquitous chemical substance, composed of hydrogen and oxygen, that is essential for the survival of many known forms of life. In typical usage, water refers only to its liquid form or state, but the substance also has a solid state, ice, and a gaseous state, water vapor or steam. Water covers 71% of the Earth's surface. On Earth, it is found mostly in oceans and other large water bodies, with 1.6% of water below ground in aquifers and 0.001% in the air as vapor, clouds (formed of solid and liquid water particles suspended in air), and precipitation. Saltwater oceans hold 97% of surface water, glaciers and polar ice caps 2.4%, and other land surface water such as rivers, lakes and ponds 0.6%. A very small amount of the Earth's water is contained within biological bodies and manufactured products. Other water is trapped in ice caps, glaciers, aquifers, or in lakes, sometimes providing fresh water for life on land.
Water moves continually through a cycle of evaporation or transpiration (evapotranspiration), precipitation, and runoff, usually reaching the sea. Winds carry water vapor over land at the same rate as runoff into the sea. Over land, evaporation and transpiration contribute to the precipitation over land.
Clean, fresh drinking water is essential to human and other lifeforms. Access to safe drinking water has improved steadily and substantially over the last decades in almost every part of the world. There is a clear correlation between access to safe water and GDP per capita. However, some observers have estimated that by 2025 more than half of the world population will be facing water-based vulnerability. Water plays an important role in the world economy, as it functions as a solvent for a wide variety of chemical substances and facilitates industrial cooling and transportation. Approximately 70 percent of freshwater is consumed by agriculture.
This text uses material from Wikipedia, licensed under CC BY-SA