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The authors contend that mandatory minimum building codes are essential for public safety and environmental sustainability. They advocate for a three-year update cycle to keep pace with building science and technology, arguing that current codes—specifically the 2012 International Energy Conservation Code (IECC)—significantly reduce energy waste and operational costs for homeowners. The paper highlights the role of the International Code Council (ICC) and the National Fire Protection Association (NFPA) in creating consensus-based standards. It also emphasizes that statewide adoption of these codes reduces disaster-related losses and supports the competitiveness of U.S. building suppliers against international competitors, particularly those in Europe.

The document describes a water resource systems model for the Apalachicola–Chattahoochee–Flint, Alabama–Coosa–Tallapoosa, and Tombigbee River basins. The model integrates electricity generation, agricultural, and municipal water use to assess impacts on streamflow and water temperatures, specifically addressing thermal pollution from power plant cooling. Validation against 1980–2010 data shows the model robustly represents monthly average streamflow and water temperatures.

The report argues that replacing coal with natural gas is insufficient to meet U.S. climate goals due to continued CO2 emissions and methane leakage. It highlights risks including water contamination from fracking, price volatility, and the potential to crowd out renewables. The authors advocate for a transition to a system where renewables and efficiency provide 80% of electricity by 2050.

The U.S. Highway Trust Fund (HTF), which relies on federal fuel taxes that have not been adjusted since 1993, is facing insolvency due to rising costs and declining fuel consumption. The document argues that current funding is insufficient, contributing to a 'D' grade for national infrastructure and an annual funding gap of $112 billion. It evaluates several solutions, including indexing fuel taxes to inflation or construction costs, increasing the per-gallon tax rate, and transitioning to a vehicle miles traveled (VMT) fee to better align costs with infrastructure wear, particularly from heavy trucks.

The U.S. Highway Trust Fund (HTF), which relies on fuel taxes unchanged since 1993, faces insolvency due to rising costs and declining fuel consumption. The document argues that current funding is insufficient to maintain a state of good repair, citing a $112B annual funding gap. It evaluates several solutions, including indexing fuel taxes to inflation, increasing the per-gallon tax rate, implementing vehicle miles traveled (VMT) fees, or shifting to a fuel sales tax, while highlighting the interdependence of highway and transit systems for economic efficiency.

The document highlights a trend of increasingly destructive wildfires in the U.S., driven by climate change and a lack of funding for hazardous fuel reduction. It notes that forests are shifting from carbon sinks to emitters and that the U.S. Forest Service faces significant budget cuts despite rising fire risks. The author proposes that developing markets for woody biomass and bioenergy could provide a sustainable funding mechanism for forest restoration and wildfire prevention.

The 'Half the Oil' plan proposes reducing U.S. oil use by 50% over 20 years, projecting annual oil spending cuts of $550 billion, the creation of over 1 million jobs, and the elimination of 2 billion metric tons of global warming emissions per year by 2035. The strategy focuses on improving fuel efficiency for passenger vehicles and heavy-duty trucks, expanding the adoption of electric vehicles (EVs), and implementing 'smart growth' urban planning to reduce vehicle miles traveled.

The document explains that global sea level has risen approximately eight inches since the Industrial Revolution, driven primarily by thermal expansion and the melting of land ice due to global warming. It highlights that the U.S. East and Gulf coasts are experiencing some of the world's fastest rates of rise. Projections for 2100 range from 8 inches to 6.6 feet, with significant risks of permanent inundation, amplified storm surges, and shoreline erosion for over 100 million Americans living in coastal counties. The report argues that while adaptation is necessary, reducing heat-trapping emissions is the most effective way to limit the pace and magnitude of future sea level rise.

The Union of Concerned Scientists identifies hundreds of U.S. coal generators as 'ripe for retirement' due to high operating costs and vulnerability to 'energy-water collisions.' Many of these plants rely on once-through cooling systems that withdraw massive amounts of water and are subject to strict EPA temperature discharge limits. The report argues that replacing these aging plants with renewables or energy efficiency would significantly reduce national water withdrawals and consumption, particularly in states like Alabama, Maryland, Michigan, and Wisconsin.

The report estimates the annual value of improving Florida's water quality between $1.3 billion and $10.5 billion, highlighting the severe economic and ecological impacts of nutrient pollution and harmful algae outbreaks.

The Union of Concerned Scientists identifies a significant number of U.S. coal-fired power plants that are economically uncompetitive compared to natural gas and wind power. The report argues that retiring these plants, along with those already scheduled for closure, would improve public health and reduce carbon emissions without jeopardizing grid reliability.

The X-37B is a reusable unmanned spacecraft developed by the US Air Force. The Union of Concerned Scientists asserts that the vehicle's design—specifically its ability to land like an airplane—imposes significant penalties in terms of mass, cost, and maneuverability. The report concludes that for every potential mission the X-37B could perform, including orbital inspection, reconnaissance, and sensor testing, there are more efficient and cheaper alternatives, such as lightweight disposable satellites or capsule-based recovery systems.

The analysis finds that EVs generally produce lower global warming emissions than average compact gasoline vehicles, though their relative performance against high-efficiency hybrids depends on the regional electricity grid's fuel mix. In 'BEST' regions, EVs outperform 50 mpg hybrids, while in 'GOOD' regions, some hybrids remain a better choice for emissions. Financially, EV owners in 50 major U.S. cities can save between $750 and $1,200 annually in fuel costs when using the lowest-cost electricity plans, with significant additional savings available through time-of-use (TOU) rate plans, particularly in California.

The report analyzes 15 significant safety-related 'near-misses' at U.S. nuclear plants in 2011, arguing that many resulted from owners tolerating known safety problems. While it highlights successful NRC interventions at the Fort Calhoun, Hatch, and LaSalle plants, it criticizes the agency for allowing 47 reactors to operate in violation of fire-protection regulations and 27 reactors to operate with deficient seismic protection. The author contends that the NRC often focuses on fixing individual equipment failures rather than addressing the systemic weaknesses in owners' testing and inspection regimes.

The document argues that the 'nexus' of water, energy, and climate requires integrated modeling tools to avoid unwanted policy consequences. To address this, the Stockholm Environment Institute (SEI) linked its WEAP and LEAP systems. A California case study simulating the use of desalinated seawater to meet 5% of Southern California's urban water demand by 2049 found that while desalination could reduce water imports by approximately 300 million cubic meters per year in normal years, it would increase the water sector's electricity use by about 3 terawatt-hours and greenhouse gas emissions by 1.4 million tonnes of CO2e per year by 2049.

The document argues that climate, water, and energy are intricately linked, requiring integrated modeling tools to understand cross-sectoral tradeoffs. To address this, the Stockholm Environment Institute (SEI) linked its WEAP and LEAP systems. A California case study shows that meeting 5% of Southern California's urban water demand via desalination by 2049 could reduce water imports by 300 million cubic meters per year in normal years, but would increase the water sector's electricity use by approximately 3 TWh and GHG emissions by 1.4 million tonnes of CO2e per year.

The document highlights the rapid loss of Arctic sea ice and the resulting pressure to exploit undiscovered oil and gas reserves, warning that such activities create a feedback loop of increased emissions and further melting. It emphasizes the risks of Greenland Ice Sheet melting and shifting global weather patterns, while calling for a 'zero emissions Arctic campaign' to enforce the safest, zero-emitting practices for drilling and shipping.

The report argues that the Levy and Vogtle nuclear projects carry significant financial risks for ratepayers and taxpayers due to potential cost escalations and delays. It finds that both Florida and Georgia could meet their projected energy demand growth more cost-effectively through aggressive energy efficiency targets and the development of renewable energy resources, which are presented as lower-risk and lower-cost alternatives to the Westinghouse AP1000 reactor design.

The study finds that building energy codes in the U.S. are associated with a roughly 10% decrease in primary energy use per housing unit and a 16% reduction in greenhouse gas emissions per average code household. These results are consistent with, and potentially higher than, standard engineering simulation estimates. The analysis also identifies a fuel-switching effect, where codes encourage a shift toward natural gas and away from other fuels like fuel oil, likely due to code provisions allowing tradeoffs between building envelope efficiency and high-efficiency equipment.

The document examines the role of high-performance manufactured housing in providing sustainable, affordable housing in the U.S. It highlights the energy inefficiency of older mobile homes and proposes a shift toward an integrated design approach to lower operating costs and emissions. The brief outlines six key federal recommendations, including updating the HUD Code's energy standards and improving procurement specifications for disaster housing.