Articles tagged with Carbon Emissions
A new analysis by Carnegie Mellon University researcher Akshaya Jha finds that risk aversion drives the purchasing of coal primarily from long-term contracts, resulting in premium prices. The study estimates that if power plants purchased all their coal from the spot market, annual aggregate cost savings would be $2.9 billion on average.
Researchers at Georgia Institute of Technology have developed a new water-splitting process and material that maximize the efficiency of producing carbon-free green hydrogen. The hybrid catalysts show superior performance for both oxygen and hydrogen splitting, making it an affordable and accessible option for industrial partners.
A Kyoto University-led team has created a novel hydrogen plant design that harnesses fully renewable resources to produce clean hydrogen with minimal associated CO2 emissions. The SABI-Hydrogen system uses solar heating and biomass gasification to produce hydrogen, resulting in an emission rate of only 1.04kg CO2/kg hydrogen produced.
A study by Tulane University found that swapping just one serving of beef per day for a more planet-friendly alternative can reduce greenhouse gas emissions by up to 48% and water-use impacts by 30%. This simple change could collectively make a substantial difference in reducing the carbon footprint of US diets.
A study found that increasing CO2 levels boost carbon storage in peatlands by reducing photorespiration. However, this effect depends on the intermediate water table level, not when conditions are too wet or dry.
The study found that most USSE facilities were installed on grasslands, pastures, and agricultural lands, potentially impeding Florida panther dispersal. Restoration of dispersal corridors and gene flow is critical to the species' survival, benefiting biodiversity and resiliency at the landscape-scale.
Researchers from Korea Maritime & Ocean University found that using LPG as a marine fuel can reduce annual fuel consumption by 7.5-10.4%, fuel cost by 8.8-25.9%, and carbon dioxide emissions by 10-14%. The study also highlights the potential for promoting LPG as an eco-friendly alternative to traditional fuels.
The collaboration seeks to co-develop an efficient CO2 electrolyzer that can produce ethylene, a widely used chemical building block. Yushan Yan at UD will focus on making polymer membrane materials chemical resistant and strong for long-term durability.
A new catalytic approach directly converts solid biomass into natural gas with a low carbon footprint, achieving nearly complete conversion of various agricultural and forestry materials. This process reduces fossil energy depletion and greenhouse gas emissions by up to 26% and 34%, respectively.
The upper ocean has reached record-breaking temperatures for the sixth consecutive year, with the latest data showing a significant increase in heat content. This warming trend is primarily driven by human-induced climate change, which affects ocean acidification and marine life.
A team of researchers at MIT has identified and modeled a major reason for poor performance in electrochemical carbon dioxide conversion systems, which is caused by a local depletion of CO2 gas near the electrodes. By pulsing the current off and on, they can replenish the gas levels, allowing the process to continue efficiently.
Researchers have found that special treatment of minerals called zeolites can efficiently remove methane from the air, with advantages over other methods. The process converts methane into carbon dioxide, which is less impactful in the atmosphere than methane.
A new study by the Smithsonian Tropical Research Institute reduces uncertainty in predicting carbon dioxide release from deforestation scenarios. It highlights the capacity of young, regenerating or secondary forests to pull greenhouse gas from the atmosphere, suggesting that these forests can store up to 15% of Panama's national carbo...
A team of OSU scientists has created a new technology that can scrub carbon dioxide from industrial emissions and convert it into valuable materials. The innovative Lanthanide Metal-Organic Frameworks (LMOF) system uses CO2-rich gas conditions to produce functional materials with diverse applications.
Researchers at West Virginia University aim to develop more precise predictions about the role of individual soil microorganisms in the carbon cycle. They will use stable isotope probing to track carbon uptake and characterize the function of microbes in their natural communities.
Researchers from the University of Oxford investigated the behavior of CO2 within a depleted hydrocarbon reservoir in Louisiana, USA. They found that up to 74% of CO2 was dissolved in groundwater, while microbial methanogenesis converted 13-19% of the injected CO2 to methane.
A study of nearly 35,000 routes found that traffic speeds under 20mph are most likely to encourage cycling, with higher speeds deterring commuters. The research also highlights the importance of cycle paths and separates roads for encouraging more cycling.
A study by Yale University found that electric vehicles provide lower carbon emissions due to indirect emissions from the supply chain of fossil fuel-powered vehicles. The study suggests that pricing indirect emissions can accelerate the low-carbon transition of the US light vehicle sector.
A recent study suggests that climate change in some regions is unavoidable even if CO2 levels are reduced. The intertropical convergence zone (ITCZ) shifts southwards when CO2 decreases, triggering persistent El Niño conditions and regional climate changes.
A recent study found that major US electric utility companies' voluntary climate pledges could lower net emissions by roughly 560 million metric tons of CO2 equivalent, an amount equal to one-third of 2018 US power sector emissions. This reduction is on top of existing policies and could play a vital role in climate change mitigation.
A new study by Cornell University found that moving professional conferences online reduces the global event industry's carbon footprint by 94%, and shifting to a hybrid model cuts it to 67%. The annual carbon footprint of the industry is comparable to the yearly greenhouse gas emissions of the entire US.
A simplified mathematical model found a 'lag time' between human intervention and an actual decrease in CO2 levels, which could still lead to climate tipping points. The researchers used a system of stochastic delay differential equations to analyze various emission reduction and carbon capture strategies.
Researchers from Japan have developed a new method to synthesize a pure Si-CHA membrane showing much higher CO2 separation performance than existing membranes. The key to this achievement is using a porous silica substrate instead of alumina, eliminating problems with pore size reduction and improving efficiency.
Researchers at UC Berkeley propose creating a market for small diameter trees and woody biomass to reduce wildfire risk while limiting carbon emissions. By investing in innovative wood products, the state can achieve both net carbon benefits and wildfire mitigation benefits.
Researchers at the University of Edinburgh propose a new semester schedule that can reduce CO2 emissions by 167 tonnes, 4.2%, by starting a new semester on September 12 and extending the winter vacation period. This approach could be adapted for other universities globally.
A previously unknown source of the potent greenhouse gas nitrous oxide has been found in East Siberian Yedoma permafrost. The discovery highlights the significance of thawing permafrost as a globally important positive feedback to climate change.
A $19 million research project will investigate the connection between grazing management decisions and soil health, aiming to improve soil resilience and productivity. The project, led by Noble Research Institute, will provide farmers and ranchers with tools to measure outcomes of soil health in grazing land environments.
A study by Universitat Autonoma de Barcelona found that spending revenues on climate projects increases social acceptability of carbon taxes. The research also revealed that providing information on carbon taxes can increase acceptability, while the perception of fairness is a stronger factor in acceptability than effectiveness.
A study estimates that 55% of organic matter removed during wastewater treatment is refractory, leading to high greenhouse gas emissions. The researchers propose a new perspective on carbon neutrality in the industry by leaving non-toxic recalcitrant organic matter in the wastewater.
The global plastics supply chain has a significant impact on the climate, with production accounting for 96% of total greenhouse gas emissions. The use of coal-based energy in plastic production is driving this growth, with emissions quadrupling since 1995 and causing health issues like air pollution and asthma.
The state of Georgia could dramatically reduce its greenhouse gas emissions by using onsite electric power, creating new jobs and a healthier public. CHP systems can be 85-90% efficient, reducing peak demand on the grid and providing ultra-high system efficiencies, cleaner air, and more affordable energy.
A new study led by the University of Pittsburgh reveals that 360 million metric tonnes of new plastic were produced in 2018, with only 9% being recycled. The research found that the greenhouse gas emissions associated with plastic production are staggering, accounting for 350 million metric tonnes of CO2 equivalent.
A study published in Frontiers in Energy Research found that sustainable aviation fuel (SAF) could reduce commercial aviation's CO2 emissions by between 4% and 23% by 2050. The researchers used a model-based approach to analyze data and considered five future SAF scenarios and two passenger-demand projections.
A new international study by IIASA reveals that rapid emissions cuts in the next few decades can avoid temperature overshoot, plateauing global temperatures around the time of net-zero emissions. This approach also yields long-term economic benefits, with projected GDP increases of up to 2% in scenarios that avoid overshoot.
A recent study by NTU Singapore has found a strong link between increasing air pollution and the rise of lung adenocarcinoma, a type of cancer. The study also discovered that declining smoking rates are associated with lower incidence of lung squamous cell carcinoma.
Researchers at MIT created a computational tool to minimize embodied carbon in truss structures by choosing between timber and steel. The analysis suggests that substituting materials or changing the structure can significantly reduce emissions, with potential savings of up to two times current levels.
By 2050, renewable electricity is expected to become the cheapest form of energy globally, accounting for up to three-quarters of all demand. This shift can be achieved through accelerated electrification of industries, such as steel production and transportation, which can reduce energy consumption and lower carbon intensity.
A team of scientists from GIST developed an AI-based approach to analyze and extract user behavior data, estimating the optimal demand response management for each household. The study showcases how AI can improve electricity consumption, leading to lower prices and a smaller carbon footprint.
A study at the University of Plymouth found that retrofitting an existing building with a green wall reduced heat loss by 31.4%. The study suggests that living walls can provide significant energy savings and help reduce carbon emissions in existing buildings.
A Berkeley Lab study shows how battery-electric trains can cut carbon dioxide emissions by over half, eliminating premature deaths and health costs associated with diesel freight trains. The analysis suggests that retrofitting diesel-electric trains with batteries is a cost-effective solution with multiple benefits.
A new study found that providing free green electricity and public transport can reduce home energy emissions by 13.4% and motor fuel emissions by 23.8%. This approach is more effective than redistributing carbon tax revenue among the population to address poverty.
Researchers at Cornell University developed a novel method to track microbes and understand their role in processing soil carbon. The study found that different types of bacteria have varying strategies for assimilating carbon, categorized into guilds based on their access to food.
Researchers at Singapore University of Technology and Design found that adding carbon emission labels can influence online shoppers to choose more sustainable shipping options. The study showed that slow shipping options result in lower emissions but longer delivery times, with an 81% reduction in emissions possible.
A study by Technical University of Munich found that major tech companies significantly underreported CO2 emissions from their value chain, with 50% of emissions omitted in 2019. The researchers developed a method to identify reporting gaps and estimated the omitted emissions at 751 megatons carbon dioxide equivalents.
Researchers from Swiss Federal Laboratories for Materials Science and Technology (EMPA) propose a radical approach to accelerate the energy transition. By using fossil power plants at full capacity and building solar infrastructure, they aim to minimize cumulative CO2 emissions and complete the energy transition within five years.
Researchers at Lawrence Berkeley National Laboratory have developed a new approach to modify the surface of copper catalysts, improving the conversion of carbon dioxide into useful fuels. The technique involves coating the copper with thin films of ionomers, which steer the reaction towards generating carbon-rich products.
Researchers from Australian National University warn that Australia's hydrogen strategy lacks distinction between green and blue hydrogen, which could increase emissions. Large-scale investment in fossil fuel-based hydrogen with carbon capture technology may be risky due to substantial fugitive emissions.
Concordia researcher Seth Wynes estimates that permanent adoption of lockdown-era schedules could cut carbon dioxide emissions from team travel by 22%, reducing overall annual emissions. Implementing these changes could also have co-benefits, such as reduced injuries and improved player rest.
A team of researchers at the University of Copenhagen has identified a group of proteins, called CURT1, that control the development of green leaves in plants. This discovery sheds new light on photosynthesis, which is essential for life on Earth and could lead to more efficient CO2 absorption.
Researchers tracked methane emissions from the region's 10,000 oil and gas wells, finding that they fell by half between 2015 and 2020. Despite this decline, methane leaks remained high, accounting for about six to eight percent of produced natural gas.
A new study by University of Pittsburgh researchers links econometric models with production profitability to predict the impact of demand shocks on carbon intensity. Small shocks are predicted to displace heavy crudes with higher carbon intensity, but the relation may be counterintuitive.
Researchers from NTU Singapore found significant increases in pollutant emissions at major international seaports during the COVID-19 pandemic. Emissions rose by over 100% in some ports, with container ships and dry bulk carriers experiencing the largest spikes.
Researchers predict that targeted transport measures in Cairo will reduce health-damaging pollutants by up to 55% and global warming emissions by an average of 12.4%. Better vehicle inspection and maintenance, as well as improved public transport infrastructure, are key strategies identified in the study.
Scientists at KAUST have created catalysts that can convert CO2 into valuable hydrocarbons, such as gasoline-grade isoparaffins, with high selectivity rates. The development paves the way for a circular carbon economy and drop-in fuels from CO2.
Researchers explore harnessing China's wind energy to produce carbon-free green hydrogen at a lower cost than coal-derived black hydrogen. Shifting from black to green hydrogen could reduce 100 million tons of CO2 emissions per year by 2030.
Expanding the EU's Emissions Trading System to cover road transport and heating fuels could be a cost-effective way to reduce emissions, but may affect consumers. Thoughtful policy design is crucial to relieve burdens and ensure equitable distribution of costs.
A life cycle assessment of carbon capture at Amager Bakke incineration plant reveals that the technology reduces CO2 emissions from incineration but decreases electricity production by 50%. The overall net energy efficiency is not affected, but heat output increases by 20%.
Chemists at Johannes Gutenberg University Mainz have developed a method to produce cement by milling instead of burning lime, reducing CO2 emissions. The process could be implemented on an industrial scale, but further development is needed.
A new Stanford-led study suggests that decreasing oil demand leads to larger-than-expected carbon reductions, as the impact varies depending on market factors. The research takes into account the global oil market's structure, including perfect competition, oligopoly, and cartel scenarios, to estimate climate benefits.
A group of global healthcare and tech companies has pledged to decarbonize the NHS supply chain by 2045, aiming to support the NHS's ambition to become the world's first net zero health service. The International Leadership Group for a Net Zero NHS has urged suppliers to commit to reducing their operations' carbon footprint by 2045.