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1,285 documents from Union of Concerned Scientists added on 23 October 2026
Strengthening and Diversifying the Federal STEM Workforce
The report analyzes the federal STEM workforce, noting that while staffing levels at agencies like the EPA and FWS returned to 2017 levels by 2022, significant capacity gaps and burnout persist. It highlights systemic underrepresentation of BIPOC, LGBTQQIA, and disabled individuals, rooted in historical injustices and maintained by barriers such as pay gaps, hostile work environments, and inefficient hiring processes. The authors recommend expanding partnerships with Minority-Serving Institutions (MSIs), reforming compensation to be competitive with the private sector, and institutionalizing DEIA through data-driven accountability and inclusive organizational cultures.
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Document type: Report
A Scientist’s Guide to Successful Collaboration
The Union of Concerned Scientists (UCS) outlines a values-based approach to scientist-community partnerships, emphasizing mutual respect, transparency, and the integration of community and Indigenous knowledge. The guide provides a step-by-step process for initiating collaborations, overcoming professional and social barriers, and ensuring equitable outcomes through tools like Memoranda of Understanding (MOUs) and restorative justice practices.
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Document type: Guide
gcf-pledge-ngo-support-letter-3d39d0c091ada1c4.pdf
A coalition of 114 organizations urges the Biden Administration to make an ambitious financial pledge to the Green Climate Fund's second replenishment.
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Document type: Statement
ag-research-scientist-letter-final-9-20-23-24292615832221df.pdf
A group of scientists requests increased public funding for US agricultural research to address the climate crisis, noting that inflation-adjusted investments have fallen by one-third since 2002. They argue that public R&D is essential for developing tools to mitigate climate change and improve food security, as private sector research often ignores non-commercial environmental benefits. The letter specifically calls for more resources for USDA agencies and programs such as the Agricultural Research Service (ARS), the Agriculture and Food Research Initiative (AFRI), and research into sustainable nutrition and farmworker health.
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Document type: Statement
Pennsylvania Clean Trucks Program
The report analyzes two policy scenarios for Pennsylvania's medium- and heavy-duty (M/HD) vehicle fleet: the adoption of California's Advanced Clean Trucks (ACT) rule and a more aggressive '100 x 40 ZEV + Clean Grid' scenario. Both scenarios project significant reductions in greenhouse gas (GHG), nitrogen oxide (NOx), and particulate matter (PM) emissions, leading to substantial public health benefits and net societal gains. While initial costs for fleets are higher, the report finds that ZEVs will reach lifetime cost parity with combustion vehicles as purchase prices fall and fuel/maintenance savings accumulate. The transition is projected to generate positive macroeconomic effects, including net national job gains and increased GDP by 2035, and could potentially lower electricity rates for residential and commercial customers due to increased utility net revenue from EV charging.
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Document type: Report
Maryland Clean Trucks Program
The analysis finds that transitioning Maryland's medium- and heavy-duty vehicle fleet to zero-emission vehicles (ZEVs) would yield significant net societal benefits, ranging from $6.6 billion under the ACT rule to over $11.6 billion under the 100 x 40 ZEV scenario by 2050. These benefits are driven by reductions in greenhouse gases, nitrogen oxides, and particulate matter, leading to fewer premature deaths and hospital visits. While ZEVs currently have higher purchase costs, the report projects they will reach lifetime cost parity with combustion vehicles due to lower fuel and maintenance expenses. The transition is expected to have positive macroeconomic effects, including net national job gains and increased GDP, although it requires substantial investment in depot and public charging infrastructure.
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Document type: Report
Organizational Sign-On Letter: Support Survivors of U.S. Nuclear Weapons
A coalition of experts and organizations calls on the U.S. Congress to extend the Radiation Exposure Compensation Act (RECA) before its June 2024 expiration. The letter argues that RECA must be strengthened to include comprehensive health care benefits and expand eligibility to previously excluded groups, including those affected by the Trinity site test, residents of Guam, and uranium workers employed after 1971.
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Document type: Statement
LCFS Modernization
The Union of Concerned Scientists (UCS) advocates for several reforms to California's Low Carbon Fuel Standard (LCFS) to address a decline in credit prices and prevent the program from becoming a regressive burden on low-income drivers. Key recommendations include capping lipid-based biofuels, phasing out credits for 'avoided methane emissions' from out-of-state manure lagoons, and excluding carbon capture used for enhanced oil recovery. UCS also calls for redirecting EV credit value to support overburdened populations and requiring strict community engagement for hydrogen projects in refinery areas.
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Document type: Statement
A Survey of Registered Voters in CO, GA, MI, and PA
A survey of 2,000 registered voters across four US states reveals high concern over food prices and strong support for agricultural policies that promote climate resilience, support small-scale farmers, and prioritize nutrition over commodity crop subsidies.
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Document type: Fact sheet
Scientists’ Statement to Strengthen the U.S. Environmental Protection Agency’s Proposed Rules: Greenhouse Gas Emissions Standards for Heavy-Duty Engines and Vehicles-Phase 3 (Docket ID No. EPA-HQ-OAR-2022-0985) and Multi-Pollutant Emissions Standards for Model Years 2027 and Later Light-Duty and Medium-Duty Vehicles (Docket ID No. EPA-HQ-OAR-2022-0829)
A statement signed by over 1,000 experts calling on the U.S. EPA to implement the strongest possible emissions standards for light-, medium-, and heavy-duty vehicles. The signatories argue that zero-emission vehicles are currently available and that the EPA should mandate 100% electric new vehicle sales by 2035 to protect public health and address the climate crisis, particularly in environmental justice communities.
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Document type: Statement
protect-farmworkers-and-food-chain-workers-in-farm-bill-db4527ed47101129.pdf
A coalition of organizations recommends that the next U.S. farm bill establish a dedicated Farmworker and Food Chain Worker Office, replenish pandemic relief funds, and expand disaster assistance for workers. The proposal calls for stricter meatpacking line speed regulations, increased research into pesticide alternatives, and the implementation of labor standards in USDA procurement. Additionally, it advocates for pathways to farm ownership for farmworkers, a weather warning system for workers, the protection of SNAP benefits, and enhanced protections for forestry workers on public lands.
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Document type: Statement
Building Community Resilience
This report by the Union of Concerned Scientists highlights the challenges and successes of frontline communities in the US and Puerto Rico in building climate resilience. It identifies four key themes: displacement, government negligence, funding inequities, and the effectiveness of community-driven solutions. The authors argue that while scientific solutions exist, a lack of political will and bureaucratic barriers hinder progress. The report provides specific recommendations to shift toward inclusive, community-led adaptation strategies that respect tribal sovereignty and prioritize the lived experiences of marginalized populations.
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Document type: Report
Cleaner Cars, Cleaner Air
The report finds that passenger vehicles manufactured before 2004, while representing only 19% of California's fleet, produce the vast majority of nitrogen oxides and reactive organic gases, contributing to PM2.5 pollution. This pollution disproportionately affects Black and Latino Californians and low-income households, particularly in Southern California and Los Angeles County. The authors recommend prioritizing vehicle replacement incentives for these priority populations and expanding transportation solutions beyond private car ownership.
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Document type: Executive summary
Cleaner Cars, Cleaner Air
The report analyzes the impact of passenger vehicles manufactured before 2004 in California, finding that while they represent only 19% of registered vehicles, they produce the majority of nitrogen oxides and reactive organic gases. This pollution contributes to the formation of PM2.5, which is linked to significant health issues and premature deaths. The study demonstrates that exposure to this pollution is inequitably distributed, disproportionately affecting Latino, Black, and low-income communities, particularly in Southern California. The authors recommend prioritizing vehicle replacement incentives for disadvantaged populations and expanding non-private transportation alternatives.
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Document type: Report
Lost Inheritance
The report examines how 'heirs' property'—land passed down without clear legal titles—contributes to the systemic loss of Black-owned farmland in the US. It highlights that Black farmers lost nearly 90% of their land during the 20th century, with heirs' property acting as a primary driver of involuntary land loss through forced partition sales and limited access to federal funding. The document argues that the USDA and Congress must provide direct grants, streamline farm number establishment, and fund community-based legal services to resolve clouded titles and support BIPOC farmers.
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Document type: Policy brief
Making Panels More Inclusive
The Union of Concerned Scientists provides a how-to guide for creating inclusive panels in science and policy conversations. It offers specific advice for organizers to avoid unconscious bias and tokenism, and provides a framework for invited speakers to advocate for diversity, including suggested scripts for requesting more diverse lineups or declining all-White/all-male panels.
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Document type: Guide
EtO Public Comment Guide
The Union of Concerned Scientists (UCS) published this guide to help the public influence the EPA's proposed rule on ethylene oxide (EtO) emissions from commercial sterilizers. The guide argues that while the proposal is a positive step—potentially reducing emissions by 80%—it contains significant gaps regarding cumulative health risks, fenceline monitoring, and the regulation of off-site warehouses. It urges commenters to support the use of the 2016 IRIS risk assessment, demand continuous emissions monitoring systems (CEMS), and call for a faster compliance timeline than the proposed 18 months. The document also highlights environmental justice concerns, noting that people of color and low-income communities are disproportionately located near these facilities.
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Document type: Guide
Equitable Grid Principles Guidance for Electric Grid Infrastructure Decisionmakers and Stakeholders in the MISO Region
The Union of Concerned Scientists presents a framework of nine principles designed to make electric grid infrastructure planning in the Midcontinent Independent System Operator (MISO) region more equitable. These principles advocate for the prioritization of Indigenous rights, accountable decisionmaking, and procedural justice to prevent the replication of past harms. The guidance emphasizes shifting away from centralized fossil-fuel systems toward locally controlled clean energy resources, just sourcing of materials, and worker protections. It specifically calls for the adoption of the Free, Prior and Informed Consent (FPIC) standard for Indigenous communities and the implementation of social welfare metrics to benefit disadvantaged communities.
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Document type: Report
Investing in Farmworker Health
The Union of Concerned Scientists reports that US federal agencies invest only $16.2 million annually in farmworker health research, amounting to approximately $6.75 per worker. The analysis highlights significant gaps in research for underrepresented populations and calls for increased funding through the 2023 food and farm bill, alongside broader policy changes regarding pesticide regulation, labor protections, and immigration rights to address systemic exploitation and climate-driven risks like extreme heat.
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Document type: Executive summary
The Fossil Fuels behind Forest Fires in Arizona
The Union of Concerned Scientists analysis finds that 48% of the rise in fire-danger conditions in western North America since 1901 and 37% of the cumulative burned forest area since 1986 are attributable to emissions from the 88 largest fossil fuel companies and cement manufacturers. In Arizona, over 10,000 wildfires burned nearly 2.5 million acres between 2017 and 2021, with the 2020 Bighorn Fire alone costing over $36 million. The document argues for holding these companies accountable and urges state governments to implement policies for forest health, community safety, and equitable resilience investments.
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Document type: Fact sheet