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The report advocates for a paradigm shift in sanitation and wastewater management, moving from a 'waste disposal' model to a 'resource recovery' model. It details how the safe recovery of water, nutrients, organic matter, and energy from human excreta and wastewater can improve public health, enhance agricultural productivity, and mitigate climate change. The text provides a comprehensive framework for sustainable systems, covering technical design, health risk management, environmental protection, institutional governance, and financial models. It emphasizes that sustainability depends on adapting technologies to local geographic, social, and economic contexts rather than applying universal solutions. The report includes diverse global case studies—ranging from potable water reuse in Namibia to biogas production in China and fuel briquettes in Kenya—to demonstrate the practical viability of these systems.

The Clean Air Task Force criticizes the EPA under Andrew Wheeler for rushing through rules that support "uncontrolled generation" and disregard climate science and public health. The author argues that the EPA is ignoring statutory protections and legal requirements, such as the APA and CRA, to implement rollbacks on methane, ozone, coal ash, and carbon rules before the administration's tenure ends, vowing that these actions will be challenged in court.

The report evaluates the climate and air quality impacts of residual waste treatment in the UK, comparing landfill and incineration across different scenarios. It finds that while incineration may currently appear more favorable due to energy credits, its relative performance is expected to decline by 2035 as the electricity grid decarbonises and waste composition changes. The study emphasizes that pre-treatment is essential for both technologies to align with net-zero targets and notes that incineration has a more significant negative impact on local air quality than landfill.

The document defines net zero as the balance between greenhouse gas emissions released and those removed from the atmosphere. It identifies the primary U.S. emitting sectors as transportation (28%), electricity (27%), and industry (22%), and outlines solutions including the electrification of transport and buildings, the expansion of wind and solar power, and the use of natural and technological carbon sinks. It highlights that while 12 U.S. states have net-zero mandates by 2050, massive adoption of electric vehicles and carbon removal technologies is necessary to meet Paris Agreement targets.

The document argues that the food, agriculture, and land use (FALU) sector is a primary driver of climate change, contributing approximately 24% of global emissions. It details strategies for reducing emissions—such as improving ruminant livestock management, rice cultivation, and fertilizer use—and explores the potential of 'regenerative agriculture' to sequester carbon in biomass and soils. While acknowledging the potential for biosequestration, the report cautions that these sinks are temporary, subject to 'slowdown' as they reach equilibrium, and vulnerable to reversal through land-use changes or climate disasters.

The research evaluates in-home emissions from rocket-style biomass stoves, forced draft gasifiers, and liquified petroleum gas (LPG) stoves in rural India. Utilizing a sample of 253 in-home emission tests—the largest of its kind and the first large-scale study of LPG stoves—the study examines the impact of these stoves on household air pollution and the climate, specifically regarding the release of carbon dioxide and methane.

The World Resources Institute outlines ten priorities for President Biden to address the climate crisis, centered on the principles of inclusive prosperity, focusing on carbon-heavy sectors, and supporting subnational action. Key recommendations include committing to a 45-50% emissions reduction by 2030, passing a $2 trillion climate-smart stimulus package, and phasing out new passenger vehicle sales of polluting cars by 2035. The plan emphasizes a 'whole-of-government' approach combining standards, investments, carbon pricing, and environmental justice to reach net-zero emissions by 2050.

The Clean Air Task Force (CATF) supports the European Commission's proposed Carbon Border Adjustment Mechanism (CBAM) as a tool to prevent carbon leakage and encourage global climate action. CATF argues that a CBAM must replace the free allocation of certificates under the European Emissions Trading System (ETS) and be paired with innovation policies for advanced decarbonization technologies. The organization specifically warns against including methane in the ETS due to the complexities and potential counter-intuitive effects of Global Warming Potential (GWP) time horizons. CATF recommends that the CBAM apply to all imported energy based on verifiable greenhouse gas intensity, exempt Least Developed Countries and Small Island Developing States, and reinvest all revenues into climate innovation both within the EU and in developing countries.

The statement highlights the health and environmental impacts of methane pollution and routine flaring in Texas's Permian Basin and Eagle Ford Shale regions. It criticizes the EPA for rolling back methane safeguards and the Railroad Commission of Texas for approving all 27,000 venting and flaring requests over seven years. The authors demand an end to routine flaring by 2025 to mitigate risks such as preterm births and childhood asthma in disproportionately affected communities of color.

The document introduces the LEAP-IBC tool, which quantifies the co-benefits of reducing greenhouse gases and short-lived climate pollutants (SLCPs) on public health and air quality. Applying this framework to Bangladesh's Nationally Determined Contribution (NDC) and National Action Plan to reduce SLCPs, the study finds that full implementation by 2030 would significantly reduce emissions of carbon dioxide, methane, black carbon, and PM2.5, leading to a decrease in ambient PM2.5 concentrations and the avoidance of approximately 112,000 premature deaths.

The document highlights the critical link between air pollution, human health, and climate change, specifically focusing on short-lived climate pollutants (SLCPs). It argues that because air pollution has a more immediate and tangible impact on public health than long-term climate change, it can serve as a powerful catalyst for policy action. The brief details the health burdens of PM2.5 and tropospheric ozone, including millions of asthma-related hospital visits and pre-term births. To facilitate this, the Stockholm Environment Institute promotes the Low Emissions Analysis Platform (LEAP) and Integrated Benefits Calculator (IBC) to help cities and nations model emission projections and quantify health and climate benefits simultaneously.

The document highlights a significant gap in climate action and finance regarding sanitation, noting that while the IPCC identifies sanitation as a key measure for reducing climate vulnerability, it is largely absent from Nationally Determined Contributions (NDCs) and climate funding. It examines how sanitation systems contribute to greenhouse gas emissions, particularly methane from anaerobic decomposition, and suggests that shifting from pit latrines to composting toilets or biogas systems can mitigate these impacts. The brief recommends improving research on climate-sanitation links, adapting planning frameworks like the WHO Sanitation Safety Planning approach, and increasing the capacity of sector stakeholders to mobilize climate finance.

The author highlights several 2020 court rulings that overturned Trump Administration environmental rollbacks, emphasizing that the U.S. EPA and Bureau of Land Management must prioritize science and public health over industry costs. The text argues these legal wins are critical for protecting marginalized communities, particularly Black and brown people and Tribal lands, from pollution and greenhouse gas emissions.

The Clean Air Task Force, Earthjustice, and Western Resource Advocates recommend that Colorado move away from a "single-basket" approach—which measures all greenhouse gas reductions in CO2 equivalence (CO2e)—toward a "two-basket" framework. This proposed system would require both short-lived pollutants (methane) and long-lived pollutants (CO2 and N2O) to decline on their own steady trajectories, such as both being reduced by 50% below 2005 levels by 2030. The authors argue that a single-basket approach creates problematic trade-offs, where high Global Warming Potential (GWP) values for methane could incentivize polluters to prioritize low-cost methane reductions over the long-term CO2 reductions necessary to stabilize the climate. The document asserts that the AQCC has the legal authority under HB 19-1261 to implement this separate tracking to ensure the state meets its targets of 26% reduction by 2025, 50% by 2030, and 90% by 2050.

The report details a five-day event in February 2020 focused on waste sector climate mitigation in West Africa. It highlights the development of national biogas and compost strategies in Côte d’Ivoire and Senegal, shares biodigester success from Burkina Faso and waste recovery projects from Madagascar, and outlines a technical training program on GHG MRV systems to ensure transparency in NDC implementation.

The author advocates for the EU to integrate shipping into its carbon market through the EU ETS, combined with a dedicated decarbonization fund and a binding carbon intensity target. While acknowledging that the EU ETS alone is insufficient, the document suggests these combined measures would stimulate innovation and provide a global example for carbon pricing in shipping. The author warns against free pollution permits, offsetting, and funding for fuels that cannot be produced in climate-friendly ways, urging the EU to lead despite the slow pace of the International Maritime Organisation.

The study develops an emission inventory for Nepal and compares a reference scenario with a mitigation policy scenario. It finds that implementing mitigation measures could significantly reduce black carbon, methane, and PM2.5 emissions by 2050, resulting in substantial health and agricultural benefits and a positive economic return.

Sivan Kartha highlights the catastrophic potential of a 5-degree Celsius increase in global temperatures, comparing it to the scale of change that ended the last Ice Age. He asserts that while the technology and funds to stop fossil fuel reliance exist, they are concentrated among the wealthiest 10% of the population. Kartha concludes that achieving net-zero emissions globally requires the most privileged societies to eliminate their own emissions and provide support to less privileged populations to enable a collective transition.

The briefing examines the shared origins of air pollution and climate change, primarily fossil fuel combustion, and advocates for integrated policy frameworks. It details the significant health and economic burdens of air pollution, particularly in urban areas and for vulnerable groups. The text demonstrates that the health co-benefits of climate mitigation, such as carbon pricing, often outweigh the policy costs. It provides examples of coordinated efforts in Chile, California, the EU, Madrid, and London, while warning that uncoordinated policies—such as incentivizing diesel vehicles for lower CO2 or installing SO2 filters that reduce plant efficiency—can create counterproductive outcomes.

The 2019 Rhode Island Greenhouse Gas Reduction Study finds that the state can feasibly reduce emissions by 70-80% by 2030, 2040, or 2050 by focusing on electrification, efficiency, and transitioning the power grid to renewables. The report updates previous 2016 baseline estimates, finding that 2017 emissions were approximately 45% higher than previously thought due to updated science on methane leakage and its short-term global warming potential. While substantial reductions are possible, the study notes that pathways stall at around 4 million metric tons of carbon dioxide equivalent, leaving a 20-30% gap that requires further research into industrial decarbonization and carbon sequestration.