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This report analyzes ten strategies to reduce energy-related greenhouse gas (GHG) emissions in California, Oregon, and Washington. It concludes that implementing these measures could reduce regional emissions by 200 million metric tons of carbon dioxide equivalents (MMTCO2e) by 2020, representing a 26% reduction compared to a base case scenario. The analysis suggests these strategies could provide a net present value (NPV) of nearly $40 billion in direct economic savings between 2005 and 2020, primarily driven by energy efficiency and light-duty vehicle standards.

The document outlines the process for non-Annex I Parties to assess and report greenhouse gas (GHG) mitigation measures. It defines mitigation as interventions that reduce emission sources or enhance sinks and provides a structured approach to creating baseline and mitigation scenarios. The guide reviews sectoral options across energy, transport, buildings, industry, agriculture, forestry, and waste, while identifying technical, economic, and institutional barriers. It further evaluates bottom-up modeling tools such as LEAP, MARKAL/TIMES, and ENPEP to help countries quantify mitigation potentials and report results using standardized formats like 'jaws' charts.

The document uses a System Dynamics simulation model to project the Colombian vehicle fleet's evolution from 2025 to 2050. It finds that while annual GNV consumption is projected to decrease by approximately 43% by 2050, the fuel will not disappear on its own due to systemic inertia and the gradual replacement of vehicles. The analysis highlights that traditional buses may actually see an increase in GNV vehicles due to decentralized decision-making and high initial costs of electric alternatives. Cumulatively, the transport sector would demand over 40 billion cubic meters of GNV and emit more than 70 million tonnes of CO2 equivalent by 2050, which represents a significant portion of Colombia's NDC 3.0 commitments. The brief concludes that maintaining GNV demand creates a financial burden of over 200 trillion constant pesos and pressures limited national gas reserves, suggesting that a clear public direction toward zero-emission technologies is necessary to avoid long-term fossil fuel lock-in.

The document analyzes the U.S. transportation sector's contribution to global warming, noting it is the second-largest source of emissions, primarily driven by light-duty vehicles. It proposes a three-pronged approach: improving vehicle and air conditioning efficiency, transitioning to low-carbon fuels (such as cellulosic biofuels, electricity, and hydrogen), and reducing vehicle miles traveled (VMT) through smart growth and transit expansion. The report details specific fuel economy targets for 2020 and 2030 and advocates for performance-based emission standards over traditional fuel economy standards to better account for non-CO2 emissions and alternative fuels.

The document evaluates the world's progress against six sectoral milestones designed to align global action with the 1.5°C goal. It concludes that while some progress has been made, particularly in renewable energy, overall action is insufficient and uneven. The report emphasizes the need for updated Nationally Determined Contributions (NDCs) under the Paris Agreement and calls for improved data transparency and monitoring systems to accurately track progress and ensure accountability.

The report analyzes greenhouse gas (GHG) emissions for Illinois, Indiana, Iowa, Michigan, Minnesota, Missouri, Ohio, and Wisconsin. Utilizing the World Resources Institute's Climate Analysis Indicators Tool (CAIT-US), it examines all six Kyoto GHGs across the regional economy to overcome inconsistencies in previous state-level inventories. The analysis covers regional, sectoral, and state levels, assessing major emission sources, trends, and socioeconomic drivers to inform stakeholders on the Midwest's role in global climate change.

The report argues that Brazil must expand its climate mitigation efforts beyond forestry to include the energy sector, as emissions from energy and land use change are now roughly equal. It identifies the transport, industry, and power-generation sectors as the primary areas for abatement, specifically suggesting the expansion of wind and solar energy and the electrification and hybridization of the transport fleet.

The document serves as a reference guide defining various financing instruments—including loans, equity, and de-risking tools—designed to leverage private capital for low-carbon markets in developing countries. It is derived from a larger WRI working paper and focuses on how public donors, development finance institutions, and international mechanisms can mobilize investment into sectors such as renewable energy and energy efficiency.

The analysis of ninety-three intergovernmental initiatives reveals that while global participation appears broad, representation from the Global South is critically low in key sectors such as industry, transport, and buildings. The landscape is dominated by developed countries and the top ten emitters per sector, which limits Global South access to capacity-building and information sharing. While agriculture is the most inclusive sector, others like industry show severe gaps, with 73% of initiatives excluding Least Developed Countries (LDCs).

The Science-based Targets for Faith (SBTF) guidance helps Faith-based Organizations (FBOs) reduce operational emissions from energy, mobility, heating, and cooling. It outlines a process for compiling emissions inventories, setting science-based targets, and striving for net zero emissions by 2050, leveraging the significant global footprint of FBO assets like places of worship, schools, and healthcare facilities.

The report argues that while new federal legislation will eventually be necessary to achieve the 80 percent emissions reductions needed to mitigate severe climate impacts, the U.S. Administration can meet its 2020 commitment of reducing emissions to 17 percent below 2005 levels through 'go-getter' actions. Key opportunities include using the Clean Air Act to target power plants and natural gas systems, and utilizing the Montreal Protocol and the Clean Air Act to eliminate hydrofluorocarbons (HFCs). State-level actions in energy efficiency, renewables, and transportation are also identified as essential complements to federal efforts.

Between 2000 and 2005, total global CO2 emissions increased by 12.7%, with an average annual growth rate of 2.4%. While emissions growth across the electricity & heat, transport, industry, and building use sectors was primarily driven by developing countries, developed countries continued to produce the majority of emissions in the transport and building use sectors. Developing countries now account for the majority of emissions in the industry and electricity & heat sectors.

The study calculates India's share of the global carbon budget using four allocation methods and employs four energy-economy models to map low-carbon pathways for the power, industry, and transport sectors through 2050. It finds that while the power sector's 500 GW non-fossil capacity target aligns with these budgets, the industry and transport sectors will become the largest and fastest-growing emission sources, requiring demand reduction and R&D. To support a just transition and ensure emissions reductions, the models suggest a carbon tax of INR 4,000–6,000 per tCO2e (2018 prices) by 2050 for 1.5°C scenarios, noting that India will underconsume its equity-based carbon budget share and requires international finance and technology.

The document argues that while climate action has the potential to reduce social inequalities, these opportunities are currently untapped. It emphasizes that lower-income and disadvantaged populations face the highest barriers to accessing clean solutions and are disproportionately burdened by the costs of climate policies. To achieve a just transition, the paper suggests moving beyond social co-benefits toward the proactive empowerment of underserved groups.

Jonathan Pershing's testimony to the U.S. Senate emphasizes that mitigating global climate change requires systemic shifts in power generation and transport technologies, the adoption of a diverse portfolio of solutions rather than a single technology, and government intervention through R&D funding and the establishment of price signals to drive market investment.

The Global Protocol for Community-Scale Greenhouse Gas Emission Inventories (GPC) provides a consistent international standard for cities and other subnational entities to account for greenhouse gas (GHG) emissions. Developed by WRI, C40, and ICLEI, the GPC addresses previous inconsistencies in city-level reporting to enable credible comparisons and aggregation at national levels. The framework requires cities to define a geographic boundary and categorize emissions into three scopes: Scope 1 (territorial emissions within the boundary), Scope 2 (grid-supplied energy), and Scope 3 (emissions occurring outside the boundary due to city activities). It offers two reporting approaches: a 'Scopes framework' for total emissions and a 'City-induced framework' (with BASIC and BASIC+ levels) focusing on key emitting sources. The GPC covers six main sectors: stationary energy, transportation, waste, industrial processes and product use (IPPU), agriculture, forestry, and other land use (AFOLU), and other Scope 3 emissions. While it does not mandate specific calculation methodologies, it recommends alignment with 2006 IPCC Guidelines and suggests annual inventory updates to track mitigation progress.

The document presents a flow chart of global greenhouse gas emissions for 2000, totaling 41,755 MtCO2 equivalent. It identifies Electricity & Heat (24.6%) and Land Use Change (18.2%) as the largest contributing sectors, while Carbon Dioxide (77%) is the dominant gas species.

The document outlines the challenges of modern urbanization, particularly in the global South, where rapid population growth coincides with low per capita resources. It argues that providing equitable access to core services—such as housing, water, sanitation, energy, and transportation—is essential to avoid cycles of poverty and environmental degradation and to unlock economic productivity.

The document offers a 'travellers’ kit' of practical advice for sustainable tourism in South Africa, focusing on green planning, responsible behavior, sustainable shopping, and waste reduction. It highlights specific WWF tools, such as the Southern African Sustainable Seafood Initiative (SASSI) and the Conservation Champion Wine Farm Guide, to help consumers make eco-friendly choices.