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The document assesses how constraints on biomass, specific metals, and water resources may impact the transition to a low-carbon economy. It evaluates various scenarios for biomass production, predicts cumulative deficits for metals like indium and tellurium, and examines the water-energy nexus, using a California case study to demonstrate how technology choices can mitigate water stress while reducing emissions.

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 details the environmental and economic damages in California resulting from climate change, focusing on sea level rise, drought, public health risks, wildfires, and ecosystem decline.

The report proposes a U.S. cap-and-trade system to limit global warming emissions, citing the success of the 1990 Acid Rain Program. It outlines design criteria including a stringent declining cap, full auctioning of allowances, and the inclusion of all major heat-trapping gases. The author emphasizes that while cap-and-trade is a lynchpin, it must be paired with parallel sector-based policies to be effective.

The report identifies energy efficiency as the most cost-effective strategy for cutting U.S. carbon emissions, focusing on the industrial and building sectors which together account for two-thirds of U.S. carbon emissions. It details technical opportunities such as combined-heat-and-power (CHP) systems, building envelope improvements, and high-efficiency appliances. The document proposes a 'Blueprint' of policies—including efficiency standards, resource standards (EERS), and updated building codes—that could reduce total U.S. energy consumption by 29 percent by 2030. It highlights that while technical potential is high, barriers such as 'split incentives' and high up-front costs persist, requiring coordinated federal and state intervention.

The report argues that the United States can significantly reduce its reliance on fossil fuels by deploying a diverse mix of renewable energy sources, which have the technical potential to meet current electricity needs many times over. It highlights wind, solar, geothermal, bioenergy, and hydropower as key resources, noting that wind and geothermal are already competitive with new coal and natural gas plants in some cases. The document identifies critical barriers to this transition, including the need for a modernized transmission grid, streamlined siting processes, and sustainable biomass harvesting. It proposes a policy package featuring a national renewable electricity standard (RES) ramping up to 40% by 2030, extended tax credits, and increased R&D funding. While discussing carbon capture and storage (CCS) and advanced nuclear power as potential low-carbon supplements, the report notes significant cost uncertainties, infrastructure requirements, and safety risks associated with these technologies.

The report argues that the United States can technologically and economically achieve deep emission cuts through a multi-pronged strategy. Central to this is a cap-and-trade system with auctioned allowances, which would fund clean energy investments and international forest preservation. The strategy includes implementing energy efficiency resource standards, a national renewable electricity standard of 25% by 2025, and tougher vehicle emission caps. Internationally, it emphasizes the cost-effectiveness of Reducing Emissions from Deforestation and forest Degradation (REDD) in tropical nations. The author asserts that the nation can reduce emissions by at least 35% below 2005 levels by 2020 through domestic action and international funding.

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 examines how climate change, specifically increasing temperatures, creates a 'climate penalty' that elevates ground-level ozone levels despite efforts to reduce precursor emissions. Using the BenMAP model, it estimates the health incidences and economic costs associated with ozone increases of 1 ppb, 2 ppb, and 7 ppb for the years 2020 and 2050 across various U.S. states.

The document details the relationship between rising global temperatures and the formation of ground-level ozone, which is created when nitrogen oxides and volatile organic compounds react with heat and sunlight. It highlights that without strong climate policies, respiratory issues such as asthma attacks could increase by 11.8 million annual incidences by 2050. The text emphasizes the disproportionate impact on children, the elderly, and Latino populations in the U.S., noting that nearly half of the U.S. population lives in areas with unhealthy ozone levels.

The document argues that the costs of failing to reduce carbon emissions in the United States are prohibitive, citing projected damages to coastal infrastructure, public health, water resources, agriculture, transportation, and energy systems. It highlights that under high-emissions scenarios, the annual economic impact could reach 1.9 percent of GDP by 2100. Specific regional risks include severe sea-level rise in Florida and the Northeast, extreme heat waves in Midwestern cities, water scarcity in the Southwest, and increased wildfire frequency in the West Coast and Rocky Mountain regions. The document advocates for a reduction of carbon emissions by at least 80 percent from 2005 levels by 2050 to avoid the worst consequences.

The report outlines the assumptions used to model transportation emissions reductions by 2030, including fuel economy targets, the adoption of plug-in hybrids, and the deployment of cellulosic ethanol. It describes adjustments made to the AEO 2008 model to reflect more aggressive efficiency standards and the impacts of smart growth policies.

The Cooler Smarter Trivia Night Kit is a guide designed to help individuals host educational trivia events to encourage a 20% reduction in personal carbon footprints. It includes a sample agenda, planning tips, and five rounds of trivia questions covering energy efficiency, transportation, diet, and climate policy. The kit emphasizes science-based advice to help participants navigate conflicting messages about emissions and identifies specific high-impact changes, such as improving home insulation and reducing meat consumption.

The document details the climate-related activities of various corporations, including utilities, oil and gas producers, and manufacturers. It tracks their public statements, lobbying spending, and affiliations with trade organizations and think tanks, highlighting discrepancies between public sustainability claims and political actions.

The document contains interview transcripts with executives from Denbury Resources, Exxon Mobil, NRG Energy, TECO Energy, and Waste Management (ConocoPhillips participated but declined to be quoted). The interviews explore corporate stances on climate science, the physical risks of climate change to business operations, mitigation efforts, and the funding of political or policy-oriented organizations. Findings reveal a spectrum of responses: some companies acknowledge the risks and invest in clean energy or efficiency, while others avoid taking official positions on climate science or deny that physical climate impacts currently affect their operations.

The report examines the potential for reducing global warming emissions and fuel consumption in California's heavy-duty truck fleet through the adoption of commercially available aerodynamic and tire technologies. It finds that retrofitting and purchasing efficient trucks can lead to significant diesel savings and CO2eq reductions, with some long-range trucks potentially saving over $30,000 over their lifetime. The document identifies market barriers—such as split ownership and a lack of standardized fuel-economy testing—and recommends that California establish in-use and new-truck global warming pollution standards to accelerate adoption.

The Union of Concerned Scientists analysis finds that California's cleaner fuels and vehicle policies—including cap and trade, the low carbon fuel standard, and vehicle standards—will reduce ownership costs for drivers. Weekly savings for new vehicle owners are projected to increase from $3.90 for a 2015 model to $8.98 for a 2025 model compared to a 2008 baseline. A 10-year-old used car purchased in 2025 is estimated to save its driver $7.46 per week compared to a similar used car purchased in 2015.

The document provides the technical basis for estimating EV charging emissions and costs in the US. It explains the use of average emissions intensity based on EPA eGRID data, adjusted for transmission losses and upstream feedstock emissions. It also describes a modified Oak Ridge Competitive Electricity Dispatch (ORCED) model used for hourly emissions estimates. Additionally, it outlines the process for calculating residential charging costs across 50 US cities, accounting for tiered rates, time-of-use (TOU) plans, and specific utility data.

The document advocates for the widespread adoption of aerodynamic devices and high-performance tires for heavy-duty trucks to lower fuel consumption and emissions. It highlights that these retrofits can save a typical long-range truck 2,000 gallons of diesel annually and could reduce California's global warming pollution emissions by 17 million metric tons of CO2eq by 2020. The text identifies market barriers such as split ownership and lack of standardized testing, proposing that California lawmakers implement performance-based standards and retrofit requirements to meet climate and air quality goals.

The Union of Concerned Scientists advocates for a 'count carbs and make carbs count' approach to transportation fuels, emphasizing the need for life cycle emissions analysis to distinguish between high-carbon fuels like liquid coal and low-carbon alternatives like cellulosic ethanol. The report highlights that while some biofuels can significantly reduce emissions, others may increase them depending on feedstock and land use. It promotes the adoption of Low Carbon Fuel Standards, citing California's model, to drive the market toward sustainable, low-carbon fuels and avoid the high emissions associated with liquid coal and tar sands.