Energy & Green Tech
The sustainably powered, electrochemical reduction of carbon dioxide (CO2) into useful chemicals and feedstock could help to mitigate greenhouse gas emissions, allowing industries to reuse released CO2 in beneficial ways. ...
Energy & Green Tech
Every year, airplanes crisscrossing U.S. skies burn 23 billion gallons of fuel, leaving contrails and 8% of the nation's transportation-related greenhouse gas (GHG) emissions in their wake. A recent study published in Proceedings ...
Dec 15, 2023
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Energy & Green Tech
Over the past three centuries, especially since the Industrial Revolution in the late 18th and 19th centuries, human activities have significantly increased greenhouse gas levels in the Earth's atmosphere. The main culprits ...
Aug 18, 2023
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Energy & Green Tech
What is a calorie? While most people think of calories in relation to food, calories are simply a unit of heat energy. In fact, measuring calories is essential to energy science because every chemical reaction involves energy. ...
Jul 20, 2023
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Energy & Green Tech
There's a lot of potentially useful raw materials bound up in used face masks, grocery bags and food wrap. But it has been much cheaper to keep making more of these single-use plastics than to recover and recycle them.
Feb 23, 2023
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Engineering
For the first time, Sandia National Laboratories researchers delivered electricity produced by a new power-generating system to the Sandia-Kirtland Air Force Base electrical grid.
Aug 9, 2022
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Energy & Green Tech
Researchers have designed a fuel production system that uses water, carbon dioxide (CO2), and sunlight to produce aviation fuel. They have implemented the system in the field, and the design, publishing July 20 in the journal ...
Jul 20, 2022
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Energy & Green Tech
Nuclear power generation can play a crucial role in helping the world reach a key goal of zero carbon emissions by the middle of the century, especially in countries with low wind resources, according to new work in Nature ...
Feb 14, 2022
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Engineering
The ultimate target of many environmental interventions is to drastically reduce CO2 emissions and minimize its presence in the air. One tool that could help to achieve this goal is direct air capture (DAC) technology, which ...
Energy & Green Tech
Sodium-ion batteries are a potential replacement for lithium batteries, but the anodes—positively charged electrodes—that work well for lithium-ion batteries don't provide the same level of performance for sodium-ion ...
Jan 12, 2021
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The carbon cycle is the biogeochemical cycle by which carbon is exchanged among the biosphere, pedosphere, geosphere, hydrosphere, and atmosphere of the Earth.
The carbon cycle is usually thought of as four major reservoirs of carbon interconnected by pathways of exchange. These reservoirs are:
The annual movements of carbon, the carbon exchanges between reservoirs, occur because of various chemical, physical, geological, and biological processes. The ocean contains the largest active pool of carbon near the surface of the Earth, but the deep ocean part of this pool does not rapidly exchange with the atmosphere.
The global carbon budget is the balance of the exchanges (incomes and losses) of carbon between the carbon reservoirs or between one specific loop (e.g., atmosphere ↔ biosphere) of the carbon cycle. An examination of the carbon budget of a pool or reservoir can provide information about whether the pool or reservoir is functioning as a source or sink for carbon dioxide.
This text uses material from Wikipedia, licensed under CC BY-SA
