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The adoption of the ACT and HDO rules in Massachusetts is projected to significantly reduce toxic air pollutants and carbon emissions from medium- and heavy-duty vehicles, leading to substantial health savings and net societal benefits by 2050.

The proposal seeks USD 224,461.76 to create a long-term strategy for e-mobility in Cambodia, addressing barriers in policy, infrastructure, and finance. The project aims to establish an inter-institutional coordination mechanism and a comprehensive roadmap to transition from internal combustion engines to electric vehicles, targeting a 3% reduction in transport sector GHG emissions by 2030.

The report analyzes urban green finance in Hyderabad and Kolkata, finding that both cities are heavily dependent on state and central government funding. While Hyderabad has made significant progress in renewable energy and electric mobility, and Kolkata has excelled in e-bus adoption and wetland conservation, both face governance challenges due to overlapping mandates and limited financial autonomy. The study recommends harmonized climate budgeting, increased devolution of funds to urban local bodies, and the exploration of innovative financing mechanisms like green bonds and resilience bonds to bridge investment gaps.

The adoption of the Advanced Clean Trucks (ACT) and Heavy-Duty Omnibus (HDO) rules in Oregon is projected to significantly reduce toxic air pollutants and greenhouse gas emissions from medium- and heavy-duty (M/HD) vehicles. By 2050, these regulations are expected to reduce NOx emissions by nearly 90% and PM2.5 by over 80%, preventing approximately 156 premature deaths and 118 hospital visits. Economically, the shift is projected to generate $21.2 billion in cumulative net societal benefits by 2050, with electric truck operators seeing an estimated $60,000 in net lifetime savings per vehicle by 2040 due to lower fuel and maintenance costs.

The document details the impact of Washington adopting the Advanced Clean Trucks (ACT) rule, which requires an increasing percentage of new medium- and heavy-duty (M/HD) vehicle sales to be zero-emissions starting in 2024. It highlights that while M/HD vehicles make up only 10% of vehicles on Washington roads, they contribute disproportionately to pollution, including 30% of global warming emissions, 60% of NOx, and 50% of PM2.5 from on-road vehicles. The transition is projected to eliminate nearly 47 million metric tons of carbon dioxide by 2050 and generate $24.9 billion in cumulative net societal benefits by the same year.

The Clean Air Task Force calls on the U.S. EPA to update national ambient standards for ozone and fine particulate matter and urges Congress to provide $500 million to modernize the air quality monitoring system. The statement highlights that while combined emissions of six key pollutants dropped by 78 percent between 1970 and 2020, low-income and minority communities remain disproportionately burdened. It further emphasizes that climate change exacerbates air quality issues, such as increasing ground-level ozone and wildfire-driven particulate pollution, and advocates for a synergistic approach to reducing both greenhouse gases and conventional pollutants.

Ghana's updated NDC (2020-2030) aims to reduce absolute greenhouse gas emissions by 64 MtCO2e and benefit nearly 38 million people. The plan consists of 13 adaptation and 34 mitigation measures, requiring an estimated investment of US$ 9.3 to US$ 15.5 billion. The strategy emphasizes sustainable energy transition, landscape restoration, and social inclusion, with a specific focus on reducing short-lived climate pollutants to improve public health.

The Stockholm Environment Institute (SEI), the Climate and Clean Air Coalition (CCAC), and IKEA are creating a guide for businesses to develop air pollutant emission inventories for their value chains, intended for publication in 2022. The initiative addresses a gap in comprehensive guidance for the private sector, aiming to align air pollution reporting with existing greenhouse gas (GHG) standards to leverage existing corporate resources. The guide will cover pollutants including particulate matter, black carbon, sulphur dioxide, and nitrogen oxides, providing a framework to identify emission sources and quantify them using activity-based methods. The business case for this action includes meeting customer demands, reducing legal and financial risks—highlighted by multimillion-dollar fines for companies like Toyota and ExxonMobil—and improving operational efficiency.

California is projected to fall 125 million metric tons of CO2 short of its 2045 targets, necessitating the use of carbon capture and storage (CCS) and carbon dioxide removal (CDR) to address hard-to-abate industrial emissions and achieve net-negative emissions. The state possesses vast geologic storage potential, particularly in Central Valley saline aquifers, estimated at 30-417 gigatonnes of CO2. Beyond emissions, these technologies are presented as means to improve air quality by reducing sulfur dioxide and particulate matter, and to support workforce stability during the clean energy transition.

As of August 2021, fewer than 1% of U.S. school buses are electric, with adoption heavily concentrated in California and suburban areas. While 33 states have committed to electric buses, the report emphasizes that targeted public funding is essential to ensure these benefits reach vulnerable communities and rural areas, which currently lag in deployment despite the health risks posed by diesel emissions to students.

As of March 2022, 12,275 electric school buses have been committed across 38 US states, with California leading in adoption. While a large portion of these commitments stem from a single 10,000-bus contract between Midwest Transit Equipment and SEA Electric, the report finds that adoption is trending toward historically underserved communities, particularly those with high PM2.5 pollution and high populations of non-white and/or Hispanic people.

As of December 2021, 1,828 electric school buses were committed across 36 US states, representing a 57% increase since June 2021. California is the primary leader in adoption, holding nearly half of all commitments. While adoption correlates with high median household income, it is more evenly distributed across different poverty levels. The report notes that the vast majority of the US school bus fleet (95%) still relies on diesel, and that the Infrastructure Investment and Jobs Act has allocated $5 billion over five years to accelerate the transition to lower-emission buses.

The document examines how rising temperatures and worsening air quality in Japan threaten the health and performance of Olympic and Paralympic athletes, specifically highlighting the risk of exertional heat stroke and the impact of ground-level ozone. It provides data on Tokyo's warming trend since 1964 and lists specific sports at high risk, such as the marathon and triathlon. Mitigation efforts include relocating the marathon to Sapporo, implementing the 'Tokyo 2020 Cooling Project', and athlete acclimatization.

Climate Central developed an Urban Heat Intensity Index for 159 U.S. cities, finding that New Orleans, Newark, New York City, Houston, and San Francisco have the highest intensity scores. The report identifies albedo, lack of greenery, population density, and building height as primary drivers of the UHI effect. These conditions exacerbate heat waves, worsen air quality through ground-level ozone formation, and disproportionately affect vulnerable populations, particularly those in formerly redlined neighborhoods. Proposed solutions include short-term emergency cooling measures and long-term infrastructure changes such as planting trees, installing green and cool roofs, and deploying solar energy.

The document highlights the challenges of rapid urbanization in India, where urban freight contributes significantly to emissions, congestion, and road fatalities. It argues that with demand for urban freight expected to rise by 140 percent this decade, implementing specific freight management measures is essential to lower logistics costs and meet climate goals.

The document advocates for a comprehensive EU directive on corporate due diligence to prevent environmental harm. It argues against size-based thresholds for companies, citing the seafood and timber industries as examples where small and medium enterprises (SMEs) can cause significant damage. It emphasizes the necessity of a 'life cycle' approach to value chains, particularly for fossil fuels (addressing Scope 3 emissions and methane leakage) and plastics (addressing pellet pollution). Finally, it calls for mandatory, detailed public reporting to ensure corporate accountability, using the automotive sector's emissions and battery supply chains as a case for transparency.

The Green Corridors programme in Medellín has significantly reduced urban temperatures and air pollution while creating employment and public spaces.

The document explores low- and zero-emissions zones (LEZs and ZEZs) as tools for cities to reduce air pollution and greenhouse gas emissions. It compares international examples from Europe and Singapore with a voluntary pilot in Santa Monica, California. A significant portion of the guide is dedicated to ensuring equity, arguing that ZEZs in California must be designed to avoid regressive financial burdens on low-income residents and people of color, who are disproportionately exposed to vehicle-related PM2.5 pollution. The authors recommend that California provide enabling legislation for cities to implement these zones and suggest targeting high-pollution sectors, such as heavy-duty freight, to maximize public health benefits in disadvantaged communities.

The document outlines how low- and zero-emissions zones can improve air quality and achieve climate goals while addressing racial and economic equity. It highlights critical equity concerns, such as the risk of financial burdens on low-income residents and the need for community-led enforcement mechanisms. The text provides policy recommendations for California states and cities to ensure public oversight and technical support for pilot projects, particularly in under-resourced communities.

The Clean Air Task Force (CATF) welcomes the EPA's rescission of a Trump-era cost-benefit rule, which CATF claims was designed to "impair efforts to protect public health and the environment" by discounting the benefits of Clean Air Act requirements. CATF urges the EPA to consider all relevant costs and benefits, including non-monetizable ones, to effectively address climate change, clean air, and environmental justice.