A study by a team of researchers from China, the US and Germany suggests that future climate change may worsen air quality for more than 85% of China’s population, leading to an additional 20,000 deaths each year. An open access paper on their work is published in Proceedings of the... Read more →


The California Air Resources Board’s latest state inventory of greenhouse gas emissions shows that California’s GHG emissions continue to decrease. In 2017, emissions from GHG emitting activities statewide were 424 million metric tons of CO2 equivalent (MMTCO2e), 5 MMTCO2e lower than 2016 levels and 7 MMTCO2e below the 2020 GHG... Read more →


Porsche launches carbon offsetting program for US drivers

Porsche Cars North America, Inc. (PCNA) has launched Porsche Impact, an online tool that links individual CO2 emissions to specific climate projects. The program is available to US customers after PCNA earlier this year enrolled its own Porsche Experience Center cars and its Porsche Passport subscription fleet. Impact has been... Read more →


A new study published in Nature Communications by researchers from IIASA, Boston University, and the Ca’ Foscari University of Venice found that by mid-century, climate change will increase the demand for energy globally, even with modest warming. The world is dependent on energy both for human wellbeing and society’s continued... Read more →


Year-over-year, US greenhouse gas emissions were 0.5% lower in 2017 than the prior year (after accounting for sequestration from the land sector), and power sector emissions fell 4.2%, according to the 2019 edition of the US Environmental Protection Agency’s (EPA) annual report on greenhouse gas (GHG) emissions. This decrease was... Read more →


Carbon Recycling International has been awarded a €1.8-million (US$2.0-million) grant under the EU Horizon 2020 Research Programme to increase the scale of its CO2-to-methanol technology, marketed under the trademark Emissions-to-Liquids (ETL). The grant will allow CRI to accelerate efforts to commercialize large scale production plants, expanding the market for ETL... Read more →


A new study released by the US Department of Agriculture (USDA) finds greenhouse gas emissions from corn-based ethanol are about 39% lower than gasoline. The study also states that when ethanol is refined at natural gas-powered refineries, the greenhouse gas emissions are even lower—around 43% below gasoline. The study, led... Read more →


An annual ' tracking the progress of California Climate Investments, released by the California Air Resources Board and the California Department of Finance, finds that nearly $1.4 billion in new funding last year went to projects across all of California’s 58 counties—almost double the $720 million spent in 2017. The... Read more →


Carbon dioxide emissions from S energy consumption will remain near current levels through 2050, according to projections in EIA’s Annual Energy Outlook 2019. The AEO2019 Reference case, which reflects no changes to current laws and regulations and extends current trends in technology, projects that US energy-related CO2 emissions will be... Read more →


The European Parliament and the Council have reached provisional agreement on a regulation setting, for the first time in the EU, strict CO2 emission standards for trucks. Under the agreement, emissions from new trucks will have to be 15% lower by 2025 and 30% lower in 2030 compared to 2019... Read more →


In 2017, total gross U.S. greenhouse gas emissions were 6,472.3 MMT (million metric tons) CO2 equivalent, a decrease of 0.3% from 2016, according to the US Environmental Protection Agency’s (EPA’s) latest Greenhouse Gas Inventory. The decrease in total greenhouse gas emissions between 2016 and 2017 was driven in part by... Read more →


Reintroducing commercial supersonic transport (SST) aircraft into the global aviation fleet could have significant noise and climate impacts by 2035, according to a new study by the International Council on Clean Transportation (ICCT). The paper analyzes the landing and takeoff (LTO) noise, sonic boom, and CO2 implications of introducing 2,000... Read more →


Fewer soot particles in the exhaust stream of aircraft reduces the formation of ice crystals and therefore the climate impact of the resulting contrail cirrus. Halving the ice particles that form in the contrail decreases the climate-warming effect of the contrail cirrus by 20%; the effect is halved if there... Read more →


US electric power sector CO2 emissions have declined 28% since 2005 because of slower electricity demand growth and changes in the mix of fuels used to generate electricity, according to the US Energy Information Administration (EIA). EIA calculated that CO2 emissions from the electric power sector totaled 1,744 million metric... Read more →


Nine states and DC to design regional approach to cap greenhouse gas emissions from transportation

A coalition of nine Northeast and Mid-Atlantic states and the District of Columbia announced their intent to design a new regional low-carbon transportation policy proposal that would cap and reduce carbon emissions from the combustion of transportation fuels, and invest proceeds from the program into low-carbon and more resilient transportation... Read more →


Study finds megacity traffic soot can reach high altitudes and be transported over long distances, contributing to global warming

Soot from road traffic in emerging countries can reach high altitudes, where it can be transported over long distances and thus contributes to global warming, according to the findings of a study performed by an international team of researchers in the Bolivian cities of La Paz (the seat of government),... Read more →


CliMA consortium seeks to build more precise climate model from ground up

A consortium of researchers led by Caltech, in partnership with MIT; the Naval Postgraduate School (NPS); and JPL, which Caltech manages for NASA, seeks to build a new type of climate model that is designed to provide more precise and actionable predictions. Leveraging recent advances in the computational and data... Read more →


Maersk, the world’s largest container shipping company, has set a goal to reach carbon neutrality by 2050. To achieve this goal, carbon neutral vessels must be commercially viable by 2030, and an acceleration in new innovations and adaption of new technology is required. The maritime industry emitted close to 1000... Read more →


California is not on track to meet the greenhouse gas reductions expected under SB 375 for 2020, with emissions from statewide passenger vehicle travel per capita increasing and going in the wrong direction, according to a new report published by the California Air Resources Board (ARB). While overall, California has... Read more →


Greenhouse gas (GHG) emissions across the European Union rose slightly in 2017, mostly because of the transport sector. Preliminary estimates published in the European Environment Agency’s (EEA) annual trends and projections assessments show a 0.6% emissions increase in 2017 from 2016. This limited increase means that the EU is still... Read more →


European Council agrees on 35% cut in new car CO2 by 2030

The European Council agreed on setting a target of a 35% average reduction in CO2 emissions form new cars by 2030. This position is a basis on which to begin talks with the European Parliament, which just came out with its own target of 40% by 2030 (earlier post). The... Read more →


Columbia University engineers make breakthrough in understanding electroreduction of CO2 for conversion to electrofuels

Electrocatalysis and photocatalysis (artificial photosynthesis) are among the most promising ways to achieve effective storage for renewable energy. CO2 electroreduction has been capturing the imagination of researchers for more than 150 years because of its similarity to photosynthesis. Recent research in electrocatalytic CO2 conversion points the way to using CO2... Read more →


Aerosols are tiny particles released into the atmosphere by human activities; they have proven negative effects on air quality—damaging human health and agricultural productivity. However, while greenhouse gases cause warming by trapping heat in the atmosphere, some aerosols can have a cooling effect on the climate because the aerosol particles... Read more →


PNNL: increases in aerosols from East Asia decreased effects of reductions in US emissions in western states by 25%

A study led by scientists at the US Department of Energy’s Pacific Northwest National Laboratory found that, in the western United States, increases in aerosols from East Asia decreased the radiative warming effect induced by reductions in US emissions by 25% from 1980-2014. The open-access study appears in the AGU... Read more →


CARB proposes amending California LEV III Greenhouse Gas Emission Regulation to maintain stringency if US standards change

The California Air Resources Board (CARB) has proposed amending the California Low-Emission Vehicle III Greenhouse Gas Emission Regulation to ensure that cars and light-duty trucks for model years 2022-2025 continue to meet California standards even if Federal standards are frozen. (Earlier post.) Recognizing the value of a national program to... Read more →


The California Air Resources Board (CARB) announced that greenhouse gas emissions in California in 2016 fell below 1990 levels for the first time since emissions peaked in 2004—a reduction roughly equivalent to taking 12 million cars off the road or saving 6 billion gallons of gasoline a year. Under Assembly... Read more →


Greyrock, NREL study determines reduction in GHG and criteria pollutant emissions from using synthetic fuels produced from flare gas

A “well-to-wheel” life cycle assessment (LCA) by a team from synthetic fuels producer Greyrock (earlier post), and the National Renewable Energy Laboratory (NREL) has determined the potential reduction of greenhouse gases and criteria pollutant emissions from the use of synthetic fuels directly converted from flare gas. The results of this... Read more →


During the first three years of California’s 5-year-old cap-and-trade program, the bulk of the greenhouse gas reductions occurred out of state—i.e., state residents did not see the benefits of improved air quality from presumed reductions in harmful co-pollutants, such as particulate matter—according to a new study led by UC Berkeley... Read more →


New phase of globalization could undermine efforts to reduce CO2 emissions

A new study finds that the growth of carbon production from Chinese exports has slowed or reversed, reflecting a “new phase of globalization” between developing countries that could undermine international efforts to reduce emissions. The paper is published in Nature Communications. The study, involving researchers from the University of East... Read more →


Rio Tinto and Alcoa announce world’s first carbon-free aluminum smelting process; Apple assist; Elysis JV to commercialize

Rio Tinto and Alcoa Corporation announced a revolutionary process to make aluminum that produces only oxygen as a by-product, eliminating all direct greenhouse gas emissions from the traditional smelting process. In Canada alone, use of the technology could eliminate the equivalent of 6.5 million metric tonnes of greenhouse gas emissions,... Read more →


California ARB readying regulatory options to maintain state LDV GHG standards in event of Federal change

In April 2018, the US Environmental Protection Agency (EPA) completed the Midterm Evaluation (MTE) process for the greenhouse gas (GHG) emissions standards for cars and light trucks for model years 2022-2025, and determined that the current standards are not appropriate and should be revised. (Earlier post.) The California Air Resources... Read more →


In Japan, Aichi Prefecture, Chita City, Toyota City, Chubu Electric Power, Toho Gas, Toyota Motor Corporation, and Toyota Industries have launched the Chita City and Toyota City Renewable Energy-use Low-carbon Hydrogen Project. The project is a first step toward realizing the 2030 vision of a low-carbon hydrogen supply chain formulated... Read more →


A new earth modeling system will support weather-scale resolution and use advanced computers to simulate aspects of Earth’s variability and anticipate decadal changes that will impact the US energy sector in coming years. After four years of development, the Energy Exascale Earth System Model (E3SM) is being released to the... Read more →


The International Council on Clean Transportation (ICCT) reports that the Marine Environment Protection Committee of the International Maritime Organization (IMO) has adopted a resolution codifying an initial greenhouse gas (GHG) strategy for international shipping. This strategy, which represents the first global climate framework for shipping, includes quantitative GHG reduction targets... Read more →


Researchers measure actual CO2 emissions from fossil fuel use and compare to reported levels

Researchers have measured CO2 emissions from fossil fuel use in California and compared them to reported emissions. This is the first time fossil fuel emissions have been independently checked for such a large area. The team of researchers, led by researchers from Imperial College London (ICL), developed a technique to... Read more →


Stanford Energy Modeling Forum project confirms carbon pricing can be effective way to curb GHG emissions

The Stanford Energy Modeling Forum (EMF) was established at Stanford more than 40 years ago to bring together leading experts and decision makers from government, industry, universities, and other research organizations to study important energy and environmental issues. For each study, the Forum organizes a working group to develop the... Read more →


EPA: GHG emissions standards for cars and light trucks should be revised; joint process with NHTSA (updated with more reactions)

The US Environmental Protection Agency (EPA) Administrator Scott Pruitt announced the completion of the Midterm Evaluation (MTE) process for the greenhouse gas (GHG) emissions standards for cars and light trucks for model years 2022-2025, and his final determination that the current standards are not appropriate and should be revised. Administrator... Read more →


Numerous studies have tackled the future environmental impact of battery-electric vehicles; the resulting assessments are highly uncertain. Now, a team of researchers at the Paul Scherrer Institut in Switzerland, with colleagues at Leiden University (Netherlands) and PBL Netherlands Environmental Assessment Agency have used Monte Carlo and global sensitivity analysis to... Read more →


ICCT: decline in diesel sales will have negligible impact on attainment of European CO2 emission standards

The current decline is ales of diesel light duty vehicle in Europe does not put EU CO2 targets out of reach of automakers, according to a new analysis by the International Council on Clean Transportation (ICCT). Other technologies—such as efficiency improvements in gasoline engines as well as the rollout of... Read more →


Audi begins initial engine testing of Global Bioenergies, Fraunhofer e-gasoline

Audi remains convinced of the potential of the fuels e-gas, “e-benzin” (e-gasoline) and e-diesel and is continuing to pursue its e-fuels strategy. (Earlier post.) Audi and its development partners Global Bioenergies S.A. (earlier post) and the Fraunhofer Center for Chemical Biotechnological Processes (CBP) now report that they have for the... Read more →


Average CO2 emissions generated by new cars in Europe increased during 2017—the first rise in 10 years—according to a new analysis by JATO Dynamics. Covering 23 European markets, the study found that average CO2 emissions increased by 0.3 g/km in 2017, finishing at 118.1 g/km. This rise in average CO2... Read more →


Greenhouse gas emissions (GHGE) from the Information and Communication Industry (ICT) could grow from roughly 1–1.6% in 2007 to exceed 14% of the 2016-level worldwide GHGE by 2040, accounting for more than half of the current relative contribution of the whole transportation sector, according to a new study from McMaster... Read more →


Crude palm oil is one of the more than ten renewable raw materials that Neste uses to produce a range of renewable products, including renewable diesel. Palm oil represents approximately 20% of Neste’s renewable raw material usage annually. Neste has been exploring ways to contribute to improving palm oil industry’s... Read more →


The UK automotive industry warned that the current anti-diesel agenda combined with the ongoing slow take-up of electric vehicles could mean industry misses its next round of CO2 targets in 2021, with negative consequences for the UK’s own climate change goals. The warning came as a new report published by... Read more →


OECD: governments should make better use of energy taxation to address climate change; “meaningful” increases limited to road sector

Greater reliance on energy taxation is needed to strengthen efforts to tackle the principal source of both greenhouse gas emissions and air pollution, according to a new OECD report. Taxes are effective at cutting harmful emissions from energy use, but governments could make better use of them. In 2015, outside... Read more →


A cradle-to-grave (C2G) assessment of greenhouse gas (GHG) emissions and costs for current (2015) and future (2025–2030) light-duty vehicles by a team from US DOE and national laboratories, major automakers, EPRI and Chevron has found that currently, hybrid and plug-in hybrid petroleum-fueled vehicles provide the most attractive cost in terms... Read more →


Removing fossil fuel subsidies would have only a small effect on CO2 emissions and renewable energy use, according to a new study led by the International Institute for Applied Systems Analysis (IIASA) and published in the journal Nature. Fossil fuel subsidies amount to hundreds of billions of dollars worldwide, and... Read more →


Marine shipping fuels will get cleaner in 2020 when a regulation by the International Maritime Organization (IMO) requires a decrease in the allowable amount of sulfur in fuel oil from 3.5% to 0.5%—i.e., from 35,000 parts per million (ppm) to 5,000 ppm. This marks the most significant improvement in global... Read more →


Ultrafine aerosols—minute particles from urban (e.g., vehicles) and industrial air pollution—fuel powerful storms and influence weather much more than has been appreciated, according to a study published in the journal Science. Scientists have known that aerosols may play an important role in shaping weather and climate; the new study shows... Read more →


Europe’s transport sector is making only mixed progress in meeting its environment, health and climate policy targets, according to the latest European Environment Agency (EEA) assessment which tracks the short and long-term environmental performance of this key economic sector across the European Union. The EEA Briefing “Transport and Environment Reporting... Read more →