Articles tagged with Carbon Emissions
A recent study challenges the assumption that biofuels are carbon neutral, finding a net increase in CO2 emissions from their use in the US. The research suggests that crop-based biofuels like corn ethanol and biodiesel offer only modest reductions in greenhouse gas emissions.
A new study from University of Michigan researchers found that biofuels like ethanol and biodiesel increase, rather than decrease, heat-trapping carbon dioxide emissions. The study analyzed U.S. crop-production data and found that only 37% of the CO2 emissions due to biofuel combustion were offset by the CO2 uptake by crops.
A new method to quantify methane emissions from livestock manure has been proposed, addressing the significant problem of measuring greenhouse gas emissions from agriculture. The approach uses laboratory measurements and a simple model to calculate daily emissions and evaluate the effects of changes in management or treatment.
A new study found that plants adapt differently to elevated CO2 levels depending on the diversity of surrounding plant species. The research tested Kentucky bluegrasses exposed to high and low CO2 levels in different communities, revealing that adaptation benefits disappear when experiencing a change in neighborhood diversity.
The US government aims to cut greenhouse gas emissions from light-duty vehicles by 80% by 2050, but current approaches may not be enough. NREL research suggests that a combination of electric and hydrogen fuel cell vehicles, vehicle connectivity, and automation could significantly reduce emissions.
A team of scientists has developed a new process using a novel ceramic membrane to convert methane to aromatics, eliminating CO2 emissions and reducing processing steps. The resulting chemicals are valuable products for insulation materials, plastics, textiles, and jet fuel.
Researchers at U of T have developed a technique to convert climate-warming carbon dioxide into useful chemicals, such as methanol and ethanol, by consuming the greenhouse gas. The breakthrough uses nanoneedles to catalyze the reaction, producing CO2 reduction faster than any catalyst previously reported.
A new study published in Nature Communications shows that CO2 can be securely stored underground for at least 100,000 years, much longer than the 10,000 years required to avoid climate impacts. This finding has significant implications for carbon capture and storage (CCS) technology.
Researchers studied the Carmel Formation's ability to store carbon dioxide, finding it provides a barrier-forming zone that traps CO2. The team used computer modeling and drilling to determine the formation's effectiveness in long-term storage.
Historical rates and patterns of tropical deforestation around the globe were used to estimate carbon emissions and species losses over time. Current emissions and extinctions are mostly tied to past actions.
A new study by UBC researchers reveals Montreal's low greenhouse gas emissions due to affordable hydropower and electric heating, while Edmonton's high emissions are attributed to extreme weather, low density, and coal reliance. The study also found a decline in average household GHG emissions across Canada from 1997 to 2009.
Scientists have developed a new approach to capture carbon dioxide from flue gases using waste marble powder, outperforming current commercial calcium-carbonate sorbents. The powder showed high carbonation conversion rates and maintained its reactivity over multiple cycles.
A new tool developed at PNNL estimates greenhouse gas and emission reductions from smart grid investments, providing insights for utilities and industry to justify investments. The Emissions Quantification Tool considers various factors, including electric vehicle charging schedules, battery-stored energy, and solar generation integrat...
A new study from University of Toronto researchers reveals that gasoline-direct injection (GDI) engines, touted for their fuel efficiency, may actually emit more climate-warming black carbon and toxic pollutants than conventional engines. The study found that GDI engines ranked in the 73rd percentile for black carbon emissions, while v...
Researchers have developed an inexpensive method to monitor CO2 storage deep underground. Testing water samples from rocks reveals altered oxygen compositions when in contact with trapped CO2, allowing simple measurement of stored CO2.
A University of Surrey study estimates the carbon footprint of crime in England and Wales, revealing burglaries contribute 30% to the total footprint. The study also found that reducing crime does not necessarily reduce carbon emissions, due to the 'rebound effect', where money spent on addressing crime is spent elsewhere.
Researchers at the University of York have developed a novel carbon capture technology called Starbons, which can absorb up to 65% more CO2 than existing methods. The materials are also highly selective and retain their absorption properties even in the presence of water.
Researchers found that plants associated with ectomycorrhizal fungi grow bigger in response to high CO2 levels, but those with arbuscular mycorrhizal fungi do not. This study challenges the idea of a universal CO2 fertilization effect and highlights the importance of symbiotic fungi in plant growth.
Plants can grow faster with higher atmospheric carbon dioxide levels if they have enough nitrogen, according to a new study. Microbes, particularly fungi that partner with plants, are essential for this process.
A new analysis published in Nature finds that country pledges under the Paris Agreement would lead to a global temperature rise of 2.6-3.1°C by 2100, exceeding the 2°C limit. The study suggests that additional measures are necessary after 2030 to limit warming to 2°C or even 1.5°C.
A new study finds that converting forests into monoculture palm plantations will cause significant climate-warming carbon emissions. Converting just 11,500 hectares of forest could release 1.5 million metric tons of carbon, equivalent to small developing countries. However, these emissions can be offset over 25 years if development is ...
Indiana University chemists Steven Tait and Kenneth Caulton will develop new catalysts for molecular transformations using surface chemistry and metal-organic chemistry. Their goal is to convert environmentally harmful CO2 molecules into carbon-neutral plastics, building materials, and fuel.
A new study found that household use of coal and dirty fuels in households is a major contributor to Beijing's notorious air pollution. Eliminating these emissions could reduce particulate levels by up to 22%. Regional efforts are crucial to address this issue, as individual cities may not have control over surrounding regions.
Researchers reconstructed past global warming and estimated potential future warming using computer modeling. Climate sensitivity was higher during past global warm periods, amplifying the effect of greenhouse gas emissions.
A study published in the Journal of Industrial Ecology found that burglary resulted in the largest proportion of total carbon footprint, accounting for 30% of emissions. The criminal justice system also accounted for a significant portion of emissions, highlighting the need to raise awareness about the environmental impact of crime.
A Swedish study investigates the feasibility of replacing nuclear power with wind power in Sweden's energy mix. The authors conclude that a backup system based on fossil fuels would be required to maintain constant emissions, leading to doubled CO2 levels.
Researchers analyzed 76 natural CO2 reservoirs worldwide to identify key criteria for effective storage. They found that sites with specific geological conditions, such as high pressure and density, are suitable for long-term storage.
A new study finds that sustained high or low oil prices could have a significant impact on future carbon dioxide emissions. The magnitude of the impact depends on various uncertainties, including energy supply and demand technologies, alternative resources, and climate policy.
The EU is investing €3 million in innovative aero-engine technologies to achieve a 75% reduction in carbon dioxide emissions per passenger kilometre by 2050. Radical new design concepts and technologies, such as composite engine cycles and heat recycling, are being explored to increase efficiency and reduce waste.
Scientists predict a record increase in atmospheric carbon dioxide concentration due to El Niño. The recent natural climate phenomenon has warmed and dried tropical ecosystems, reducing their ability to absorb CO2, and exacerbating forest fires.
A new study finds that US counties would receive significant health co-benefits from a power plant carbon standard, with the largest gains expected in the Northeast and Southwest regions. The estimated net benefits range from $1 million to $5.6 billion annually, outweighing costs of $1.5 to $3.6 billion.
Researchers highlight the importance of fire-adaptive communities in managing wildfires, which have successfully coexisted with flames for centuries. These communities use social institutions to balance individual benefits with preservation of the common good, offering valuable lessons for designing local fire management strategies.
A leading physician argues that family planning is highly cost-effective in reducing greenhouse gas emissions and advocates for voluntary family planning as a crucial strategy. Studies show that having one less child can reduce carbon legacy by up to 9441 tonnes, more than other eco-actions.
A new study published in Environmental Research Letters found that greenhouse-gas emissions from lakes and inland waterways may be up to 45% greater than previously thought. The researchers used a yearlong series of continuous measurements to gather data, revealing higher nighttime emissions and storms creating spikes.
A new study by the 2ndFOR Network found that natural processes in Latin American tropical forests can provide a solution to excess carbon dioxide threatening the planet. Regrowth forests increase above-ground carbon storage over time, depending on climate and landscape features.
Agricultural emissions must be reduced by 1 gigaton per year in 2030 to meet the Paris climate agreement's goal of limiting warming to 2°C in 2100. Current interventions will only deliver 21-40% of mitigation required, highlighting a major gap between existing options and needed reductions.
New research from the University of East Anglia reveals that poor countries will experience more frequent heat extremes before wealthier nations, despite emitting less CO2. The study shows that the poorest fifth of the global population will be the first to feel the effects of climate change.
A study by the University of Connecticut team reveals that natural forest regrowth can store significant amounts of carbon, doubling in young second-growth forests and increasing by 120% in intermediate age forests. This approach offers a low-cost alternative to tree planting for reaching carbon mitigation targets.
A recent study by the University of Eastern Finland and others found significant inaccuracies in traditional chamber techniques for measuring nitrous oxide emissions from soils. The eddy covariance method with modern laser technology provides more accurate continuous measurements, averaging out spatial and temporal variations.
Penn State will lead a six-year, $20 million University Coalition for Fossil Energy Research to advance clean energy and reduce greenhouse gas emissions. The coalition will explore research in coal, natural gas, and oil, including carbon dioxide capture and utilization, with the aim of minimizing environmental impacts.
Research published in BMJ Open found that single dose targeted intraoperative radiotherapy can save patients thousands of hours of time, journeys, and CO2 emissions compared to standard treatment. The study estimates that widespread adoption of TARGIT could save millions of miles, tons of CO2, and hundreds of hours of travel time annually
Researchers at TIFR Mumbai have designed functionalized nanomaterials that offer superior CO2 capture capacity and stability compared to conventional materials. The new sorbents feature high amine loading with minimal decrease in surface area, making them suitable for efficient CO2 capture.
A new study reveals that tropical ecosystems like the Amazon may be more sensitive to climate change than previously thought. The research found that the Amazon can experience large shifts in its carbon balance in response to extreme heat and drought, with these changes occurring surprisingly quickly.
Two researchers from Georgia Institute of Technology suggest seven energy-intensive separation processes for low-energy purification technologies. These alternative processes could reduce energy use by $4 billion per year in the US, lower carbon dioxide emissions by 100 million tons, and open up new ways to obtain critical resources.
A recent study published in Nature Climate Change reveals significant greening of a quarter to one-half of the Earth's vegetated lands due to CO2 fertilization. The increase in leaves on plants and trees has the potential to fundamentally change the cycling of water and carbon in the climate system.
The OU research team aims to improve understanding of microbial community diversity, structure, and function on greenhouse gas emissions from grasslands and croplands. The project will develop a multi-scale observation and modeling framework to estimate greenhouse gas emissions across landscape scales.
Researchers at the University of Bergen have identified PET scanning as an effective tool for improved oil production and CO2 storage. The technology uses radioactive tracers to visualize the flow of liquid or gas in rock samples, increasing the efficiency of CO2 storage and oil production.
A graphene-based sensor and switch have been developed to detect individual CO2 molecules and VOC gas molecules, which are difficult to detect due to their low concentrations. The technology has the potential to improve air quality in homes with good insulation, reducing health problems such as sick building syndrome.
A new study suggests that carbon pricing revenues could generate enough funds to cover the drinking water supply for most countries worldwide by 2030. In India alone, a carbon tax would yield around $115 billion annually, with only 4% needed for clean water and sanitation.
Simulating CO2 saturation in rocks could provide a breakthrough in carbon capture and storage by estimating the rocks' potential locations. Researchers at Kyushu University have developed a technique to characterize fluid displacement processes, allowing for more accurate estimation of storage capacity and leakage risk.
A recent study by Lund University researchers found a clear connection between global economic development and increased greenhouse gas emissions. The study analyzed data from 138 countries and discovered that as countries become wealthier, their environmental sustainability decreases.
Soil has the potential to sequester more carbon than the current atmosphere, and climate-smart agricultural practices can reduce greenhouse gas emissions and improve soil fertility. Several methods, including reducing tillage and applying biochar, can be used by land users to abate emissions and sequester carbon.
Researchers at MIT propose a hybrid system that combines coal gasification and fuel cells to boost efficiency and reduce carbon dioxide emissions. The system achieves efficiencies up to 55-60%, compared to conventional plants' 30% efficiency.
Researchers at Empa combined direct measurements with a transport model to validate statistics on greenhouse gas emissions in Switzerland. The study confirms estimated annual emission of approximately 200,000 tonnes of methane, with livestock farming contributing 70% of emissions.
A new study warns that climate change poses a significant risk of triggering multiple tipping points, leading to irreversible economic damages worldwide if left unchecked. The research suggests that immediate action is needed to reduce CO2 emissions and meet the Paris Agreement's goal of limiting warming to 1.5 °C.
Scientists in Spain have found a correlation between lower oil prices and increased CO2 emissions. The study suggests that a 1% increase in oil prices leads to a 0.4% rise in CO2 emissions. Researchers recommend designing a cautious tax structure to reduce fossil fuel consumption and promote cleaner energies.
Researchers at Stanford University have discovered a novel way to produce plastic from CO2 and plant waste, which could significantly reduce greenhouse emissions. The new technology converts fructose-free biomass into polyethylene furandicarboxylate (PEF), a promising alternative to petroleum-based plastics.
Researchers found that human activities have transformed the land biosphere into a contributor to climate change by overwhelming its ability to soak up carbon dioxide. This discovery reverses conventional thinking on human impacts on terrestrial carbon uptake.
Scientists have developed a method to transform CO2 from smokestack emissions into high-value materials for lithium and sodium batteries. The process produces carbon nanotubes with stable performance, offering a potential solution for reducing environmental impact of current power plants.
A new study by Duke University warns that China's coal-based chemical industries will significantly increase the country's carbon footprint. The industries, which include synthetic fuels and olefins, emit nine times more CO2 than alternative methods.