Engineering
The Norwegian University of Science and Technology (NTNU) has tested a system to predict the heating needs on the Gløshaugen campus. The results show that we can save even more where surplus heat is already in use.
Feb 16, 2023
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Energy & Green Tech
As carbon dioxide continues to build up in the Earth's atmosphere, research teams around the world have spent years seeking ways to remove the gas efficiently from the air. Meanwhile, the world's number one "sink" for carbon ...
Feb 16, 2023
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Energy & Green Tech
Twelve years after a nuclear catastrophe triggered by a massive earthquake and tsunami, workers at the Fukushima Daiichi plant in northeast Japan are preparing to release treated wastewater into the sea.
Feb 15, 2023
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Engineering
Dr. Seol Seung-Kwon's Smart 3D Printing Research Team at KERI and Professor Lim-Doo Jeong's team at Ulsan National Institute of Science and Technology (UNIST) developed core technology for smart contact lenses that can implement ...
Feb 14, 2023
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Energy & Green Tech
Texans like to think of their state as the energy capital of the world. But in mid-February 2021, the energy state ran short of energy.
Feb 10, 2023
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Engineering
Tall, supertall (heights of 300 meters or 984 feet or taller) and even megatall (at least 600 meters or 1,968 feet) buildings are being added to city skylines around the world.
Feb 6, 2023
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Consumer & Gadgets
Semiconductors for electric vehicles have been in short supply since 2020. The causes are multiple, including water shortages in producing countries and increasingly high-tech models in Europe.
Feb 1, 2023
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Energy & Green Tech
A team of engineering and materials scientists from China, Australia and the U.S. has developed a process for using sea water to produce hydrogen without having to first pretreat the water. In their paper published in the ...
Energy & Green Tech
Since the ancient Greeks, humankind has known that if you bring two things into contact, a small amount of electricity is created. One example is that we can rub a balloon with our hair and generate enough electricity to ...
Jan 27, 2023
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183
Energy & Green Tech
"We know a great deal about windmills on land, and something about fixed-bottom wind turbines at sea, but much less about floating wind turbines," says Geir Grasmo, Professor at the University of Agder (UiA).
Jan 26, 2023
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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
