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The Union of Concerned Scientists reports that safeguards for independent government science in the US have broken down, particularly under the Trump administration, leading to the suppression of research and retaliation against scientists. The report recommends that Congress codify scientific integrity (SI) policies into law and that agencies appoint non-political SI officials, implement transparent peer review, and establish safe whistleblower protections.

The document argues that rising sea levels and extreme coastal flooding threaten approximately 2,000 Superfund sites along the US East and Gulf Coasts, potentially releasing hazardous chemicals into nearby communities. It highlights that these risks disproportionately affect communities of color and low-income households, who are more likely to live near these sites. The authors criticize the Trump administration for sidelining climate science and rescinding resilience-focused executive orders, and they recommend a new executive order and interagency coordination to integrate climate science into Superfund site risk assessments.

The document describes a two-part methodology: first, using a "bathtub model" combining Digital Elevation Models, tidal gauge data, and NOAA sea level rise projections to map future 100-year-flood zones; second, performing a buffer analysis around 9,689 Superfund sites to determine if people of color and low-income households are disproportionately located near sites at risk of flooding.

The document highlights the intersection of public health disparities and voting access in Michigan, arguing that the COVID-19 pandemic necessitates urgent reforms to the state's election processes. It specifically calls for scaling up vote-by-mail (VBM) capacity, improving ballot verification and correction procedures, and establishing early in-person voting centers to protect voters' health and ensure representation, particularly for marginalized communities of color who have been disproportionately affected by the pandemic.

The document highlights the intersection of public health disparities and electoral access in Arizona, arguing that the COVID-19 pandemic underscores the need for voting reforms. It identifies systemic health inequities affecting Black, Latino, and Indigenous communities and links these to a lack of adequate political representation. To improve the 2020 election, the Union of Concerned Scientists recommends implementing automatic and same-day registration, expanding voting centers in rural and tribal lands, and improving the verification and tracking of mail-in ballots.

The document asserts that current US voting conditions are inadequate for a pandemic, citing primary election failures in states like Wisconsin, Illinois, and Florida. It advocates for universal vote-by-mail, automatic and online registration, and expanded early in-person voting to protect voters and ensure electoral integrity.

The document compares four categories of electrified vehicles. Conventional hybrids use regenerative braking to charge batteries and improve fuel economy. PHEVs combine an internal combustion engine with a plug-in battery, allowing for short distances of gasoline-free driving. BEVs run exclusively on electricity, producing no tailpipe emissions and offering the longest electric ranges. FCEVs use hydrogen gas to generate electricity, emitting only water from the tailpipe, though their environmental impact depends on the hydrogen production method and infrastructure is currently limited primarily to California.

The Union of Concerned Scientists (UCS) admits that despite efforts to diversify staff over the last decade, it has failed to address a culture of microaggressions and structural racism, leaving leadership largely white. In response to a public resignation letter from a Black employee and broader social unrest, the organization is implementing reforms to increase the role of staff of color in decision-making, accelerate their hiring into management, and engage the board of directors through a Diversity Equity and Inclusion Task Force.

The document highlights the intersection of public health disparities and voting access in Arizona, arguing that the COVID-19 pandemic underscores the need for administrative election upgrades. It recommends the adoption of same-day registration, improved vote-by-mail protocols, and the establishment of rural voting centers to protect marginalized communities and ensure a credible 2020 election.

The report contends that US ICBM policy is outdated, as submarine-launched ballistic missiles (SLBMs) now match or exceed ICBM capabilities while remaining invulnerable at sea. It argues that the continued deployment of ICBMs on high alert creates a dangerous risk of mistaken launch due to compressed decision timelines. The authors assert that the retention of the ICBM force is driven by non-security factors, including the economic interests of the 'ICBM Coalition' of senators and lobbying by defense contractors like Northrop Grumman. The report recommends retiring the ICBM force, eliminating 'launch-on-warning' options, and extending the life of existing Minuteman III missiles instead of spending $100 billion on the new Ground-Based Strategic Deterrent (GBSD) system.

The Union of Concerned Scientists asserts that US land-based ICBMs are outdated and dangerous due to their 'launch-on-warning' status, which risks accidental nuclear war. The report argues that submarine-launched ballistic missiles (SLBMs) now provide equivalent capability with greater security. It opposes the $100 billion GBSD program, suggesting that existing Minuteman III missiles can be maintained until retirement, and recommends immediately removing ICBMs from high alert.

The report analyzes the link between synthetic nitrogen fertilizer use in the Midwest and the formation of a hypoxic 'dead zone' in the Gulf of Mexico. It estimates that agricultural nitrogen losses have caused between $552 million and $2.4 billion in annual damages to Gulf fisheries and marine habitat ecosystem services since 1980. The authors argue that shifting to sustainable agricultural practices—such as cover cropping and conservation tillage—can reduce these losses, providing a significant return on investment by restoring marine productivity and improving soil resilience for farmers.

The Union of Concerned Scientists (UCS) emphasizes that while solar geoengineering (SG) cannot substitute for emissions reductions, the potential for atmospheric experiments requires robust, transparent, and inclusive public engagement. The brief outlines the risks of SG, such as 'termination shock' and 'moral hazard,' and provides a framework for engagement levels—ranging from informing to empowering—to ensure that research is conducted with societal legitimacy and ethical oversight.

The Union of Concerned Scientists (UCS) finds that the average EV in the US produces global warming emissions equivalent to a gasoline vehicle achieving 88 mpg, making it cleaner than any new gasoline car available. This advantage is driven by the decreasing share of coal in the US electricity grid and improvements in EV efficiency, notably from the Tesla Model 3. The report highlights that 94% of the US population now lives in regions where an EV is cleaner than a 50 mpg gasoline car, compared to less than 50% in 2012.

The document argues that systemic racism has historically excluded BIPOC from land ownership and financial resources, which undermines the resilience of the US food system. It proposes a framework for increasing land accessibility, improving financial resources, enhancing infrastructure and information, and fostering BIPOC leadership to achieve a more sustainable and equitable agricultural sector.

The report argues that rate-regulated utilities use 'self-commitment' to bypass market merit order, running coal plants that are objectively uneconomic and passing the resulting losses to captive customers through state fuel-cost-recovery processes. Using PLEXOS modeling for the MISO region in 2018, the authors find that this practice cost customers $350 million and suppressed regional market clearing prices by 2.4%. The report identifies Cleco and DTE Energy as significant contributors to these distortions and recommends that state regulators disallow the recovery of imprudent, above-market costs to incentivize efficient dispatch.

The Union of Concerned Scientists conducted a poll of 1,000 GM owners in March and April 2020. The findings indicate that GM's lawsuit to revoke the authority of California and other states to set vehicle pollution standards significantly damaged its reputation, with favorability dropping from 93% to 44%. The poll found that 87% of GM owners believe the company should support stronger pollution standards. Consumer support for the lawsuit decreased when participants were informed about GM's low environmental performance ranking, the closure of the Lordstown, Ohio plant, and the projected $160 billion cost to consumers through 2050. Consequently, the number of owners considering another brand rose from 30% to 67% after learning about these corporate activities.

The document outlines various ways the Trump administration has allegedly harmed children by ignoring scientific advice and weakening regulations. Key areas of concern include the failure to regulate neurotoxins like lead and chlorpyrifos, the lack of action on PFAS and asbestos, reduced food and product safety oversight, and the dismissal of climate science and child welfare standards at the US-Mexico border.

The document outlines the technical approaches used to estimate children's exposure to chlorpyrifos and PFAS, the process for tracking children's product recalls, and the use of EPA Regulatory Impact Analyses to quantify the health benefits lost when air pollution standards were weakened or repealed.

The Union of Concerned Scientists (UCS) asserts that current US dietary advice fails to support long-term environmental sustainability. A systematic review of 22 studies published between 2015 and 2019 indicates that the 'Healthy U.S.-Style' diet may not reduce, and could even increase, heat-trapping emissions, energy use, and water use compared to the average US diet. The brief highlights that diets higher in plant-based foods and lower in animal-based foods—specifically those with less meat and dairy—offer greater benefits for both human health and the environment. It also emphasizes that sustainable diets must address social and economic inequalities, noting that marginalized populations and food system workers face disproportionate health hazards and economic disparities. The document recommends that the scientific advisory committee for the 2020-2025 guidelines address sustainability, that Congress support its inclusion, and that funding be increased for interdisciplinary research on healthy, sustainable diets.