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Research by the Union of Concerned Scientists and University of California, Merced, indicates that emissions from the 'Carbon Majors'—the 122 largest industrial carbon producers—are responsible for approximately half of the climate-driven reductions in snowpack and streamflow, and increases in irrigation demand across the western United States. The analysis highlights specific 'hot spots' in California and the Pacific Northwest, noting that these emissions contributed to a 15% reduction in April snowpack and a 6.1% decrease in warm season streamflow. In California's Central Valley, 10% of observed groundwater loss is attributed to these companies. The document argues that the fossil fuel industry should be held financially accountable for these damages, as local governments and vulnerable communities currently bear the economic costs of adaptation and infrastructure failure.

A study by the Union of Concerned Scientists and UC Merced finds that human-caused climate change has significantly reduced snowpack and streamflow while increasing irrigation demand in the western US. Approximately half of these impacts are attributed to the emissions of 'Carbon Majors'—the 122 largest industrial CO2 emitters. The report highlights severe consequences in agricultural regions like California's Central Valley, where Carbon Majors' emissions are linked to 10% of groundwater loss, and argues for the financial accountability of these companies for climate-driven water damages.

Mighty Earth is campaigning to accelerate the decarbonization of the automobile industry, targeting Hyundai Motors Corporation. The organization highlights the need for fully fossil-free steel and green hydrogen investments, while criticizing the environmental and human rights risks associated with Hyundai's global steel supply chain, including a planned facility in Louisiana and suppliers linked to abuses in Mexico.

The report proposes optimizing the limited supply of sustainable aviation fuel (SAF) by targeting its use at airports with the highest contrail and particulate matter (PM) impacts. Analysis of 16.6 million flights in 2024 reveals that 2% of flights generate 80% of contrail-related warming. In the U.S., JFK, LAX, and O'Hare are identified as primary targets, while Heathrow, Istanbul Airport, and Paris CDG are the top candidates in Europe. The study finds that a 50% SAF blend can reduce LTO particulate emissions by 26-28% and contrail-related warming by 30-40%. While airport-wide targeting is simplest, time-based and flight-based strategies are more fuel-efficient. Implementation faces logistical hurdles, particularly at airports using hydrant fuel systems, but the report suggests these can be overcome through policy incentives and infrastructure investment.

The document argues that curbside charging is a critical alternative for renters and multifamily housing residents who lack private off-street parking. It emphasizes that successful deployment requires early engagement with 'program stakeholders' (government and private entities) and 'community stakeholders' (residents and local organizations) to navigate the complexities of urban infrastructure. The guide outlines four business models—'own and operate', 'lease', 'external operator', and 'concession'—noting that the choice depends on whether the city prioritizes program control, financial risk mitigation, or specific goals like addressing 'EV charging deserts'. It also suggests community engagement tools such as surveys, pop-ups, and dedicated websites to build trust and correct EV misconceptions.

The guide outlines ten ways US cities can advance electric mobility through permitting reform, building codes, targeted public charging, and shared e-mobility services to ensure an equitable transition.

The report presents a business case for transitioning to an electrified economy, asserting that electricity is becoming the foundation for global economic growth. It highlights that electrification is the most efficient route to decarbonization, capable of displacing approximately 60% of global fossil fuel use. The document outlines the benefits of electrification in terms of cost predictability, energy security, and public health, while identifying significant barriers such as distorted market incentives and a global skills gap. It proposes ten policy principles for governments to unlock business investment and introduces the 'Electric Advantage' program to coordinate business leadership in modernizing policy and scaling deployment.

Climate Central analysis shows that 14 of the 16 host stadiums for the 2026 World Cup are experiencing more extremely hot days during the June-July tournament period than in 1970. Human-caused climate change is responsible for an average of 49% of these extreme heat days across all stadiums, with the highest impact seen in Miami and Mexico City. In 10 repeat host cities, the frequency of extremely hot days has tripled on average since they last hosted the tournament.

The document highlights the systemic environmental inequality facing Latino communities in the U.S., who are nearly three times more likely than white communities to live in areas with the worst air pollution. It identifies fine particulate matter (PM2.5) and ground-level ozone as primary threats, exacerbated by methane emissions and wildfire smoke. The text warns that rollbacks of EPA protections, including the dismantling of the Good Neighbor Rule and the erasure of the 2009 Endangerment Finding, threaten public health. It concludes by demanding enforceable air quality standards, investments in green infrastructure, and a transition to renewable energy.

The report finds that anthropogenic climate change has significantly increased the probability of dangerous humid heat during the 2026 FIFA World Cup compared to 1994. Using Wet Bulb Globe Temperature (WBGT) as a metric, the analysis indicates that more games are expected to exceed the 26C and 28C thresholds recommended by FIFPRO for cooling breaks and postponement, respectively. While air-conditioned stadiums may mitigate risks for players, spectators at outdoor events remain vulnerable. The study concludes that without substantial adaptation and rapid mitigation of fossil fuel use, hosting summer tournaments in the northern hemisphere will become increasingly hazardous.

Leaders from GreenLatinos and other organizations advocate for the preservation of Latino, Chicano, Hispanic, and Indigenous histories within U.S. national parks and public lands. They condemn efforts to erase these narratives, remove Spanish-language resources, and dismantle environmental protections. The statement links the spirit of resistance associated with Cinco de Mayo to current struggles against climate change, inhumane migration policies, and the erasure of scientific truth and civil rights history in federal spaces.

The report highlights that over 66 million people in the US live near freight facilities, with higher concentrations of warehouses linked to increased cancer risks and air pollution. It advocates for Indirect Source Rules (ISRs), which require facilities to mitigate the 'indirect' emissions they attract, citing California's WAIRE program as a successful model for increasing zero-emission vehicle adoption and infrastructure.

The document examines the surge in data center demand in California, driven by generative AI, and warns that without new statewide policies, this growth could increase electricity costs for ratepayers, delay the clean energy transition, and threaten grid reliability. It highlights the risks of fossil-fueled backup generators on local air quality and recommends that data centers pay for their own clean energy generation and grid connection costs.

The policy brief advocates for system-wide transmission planning over the customer-by-customer load interconnection process to manage rapid electric load growth. It highlights that system-wide planning, which evaluates needs over 5 to 20 years, leads to more efficient grid design and higher benefit-to-cost ratios. To manage the risk of anticipated load not materializing, the document recommends scenario planning to identify "least-regrets" projects and phased, modular investment strategies with built-in triggers, illustrated through case studies from the Southwest Power Pool, ERCOT in Texas, and NV Energy in Nevada.

The report argues that LAUSD has significantly increased its reliance on private vendors under Superintendent Alberto Carvalho, with a high concentration of contracts going to venture capital and private equity-backed firms. It highlights risks including lack of oversight, potential data privacy violations, and the prioritization of profit over student outcomes, citing specific examples like the failed AllHere AI chatbot and the consolidation of edtech by Veritas Capital.

In 2025, the U.S. experienced 23 billion-dollar weather and climate disasters costing $115 billion, ranking it the third-highest year on record. The year was dominated by a record 21 billion-dollar severe storm events and the costliest wildfire in U.S. history, the Los Angeles wildfires. Since 1980, the frequency of such disasters has surged, with the average time between events dropping from 82 days in the 1980s to just 10 days in 2025.

The document reports that 2025 is virtually certain to be among the top five hottest years globally, driven by rising carbon pollution from fossil fuels. In the U.S., record high temperatures significantly outpaced record lows, and the year saw a record-costly start for billion-dollar weather and climate disasters, including the most expensive wildfire event on record in Los Angeles. Globally, carbon pollution intensified Hurricane Melissa, which devastated Jamaica. The report also highlights a trend of 'hydroclimate whiplash' contributing to both the Los Angeles fires and deadly flash floods in Texas, while noting that the U.S. has rolled back key clean energy policies and is set to withdraw from the Paris Agreement by January 2026.

In 2025, the contiguous U.S. experienced its fourth-warmest year on record and 23 billion-dollar weather and climate disasters, totaling $115 billion in damages. Globally, 2025 was the third-warmest year since 1850, with NOAA data indicating it was approximately 1.3°C warmer than the pre-industrial average. The year was marked by record-breaking December heat in the U.S. Southwest and devastating atmospheric river flooding in Washington and Oregon.

The document reports that November 2025 was the third warmest on record globally and the fourth warmest for the contiguous U.S. It highlights a long-term trend of warming winters in the U.S., where the coldest day of the year has warmed by approximately 7°F since 1970. The briefing also notes significant regional anomalies, such as extreme warmth in Texas and heavy rainfall in southern California, while discussing the ongoing La Niña advisory and its expected impacts on weather patterns through early 2026.

The October 2025 briefing reports that global temperatures remained exceptionally high, with the month ranking as the third warmest on record. In the U.S., warming fall temperatures have delayed the first freeze in 88% of analyzed cities, while significant drought persists across 67% of the contiguous U.S. despite localized heavy rainfall in Southern California.