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The 2026 World Cup saw nearly half of its matches played on days with a climate change signal for temperature or dangerous humid heat. Over 55% of matches occurred in cities where daily highs exceeded the 82.4°F (28°C) athletic performance threshold, with 35 of those in non-climate-controlled stadiums. Miami Stadium was the hottest non-climate-controlled venue, with an average daily high of 93.4°F (34.1°C) and dangerous humid heat on almost every match day. The hottest single game was Paraguay vs. France in Philadelphia on July 4, 2026, reaching 101°F (38.3°C). France was the most heat-exposed team, playing seven of eight matches in non-climate-controlled stadiums, while the champion, Spain, faced lower heat exposure due to more games in climate-controlled venues.

The report analyzes a severe heatwave in July 2026 characterized by record-shattering Wet Bulb Globe Temperature (WBGT) values across the eastern US and Canada. Attribution analysis indicates that while the atmospheric circulation pattern (a 'heat dome') is characteristic of the region, the intensity of the event was substantially increased by a background climate that has warmed by 1.4°C due to fossil fuel combustion. The study emphasizes that humid heat extremes are an emerging risk, as WBGT is increasing more rapidly than absolute maximum or minimum temperatures. It also highlights the disproportionate vulnerability of low-income residents, outdoor workers, and those in historically redlined urban districts, while noting the critical role of heat action plans and cooling centers in mitigating mortality.

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.

The report proposes a Gas System Analysis (GSA) framework to counter rising consumer costs and risks associated with massive gas infrastructure investments. It outlines a three-part process: depicting current system characteristics, defining future scenarios (including business-as-usual and alternative pathways), and forecasting impacts on costs, emissions, and public health. The framework aims to prevent stranded assets and support the transition to clean heat through electrification and non-pipeline alternatives.

Climate Central analysis of 221 marathons indicates that the probability of optimal, cool race-day temperatures is decreasing due to global warming. For recreational runners in the U.S., the current average chance of optimal temperatures is 27%, and this is projected to decline in 46 of 51 analyzed U.S. marathons by 2045 if high levels of heat-trapping pollution continue. The analysis highlights regional disparities, with the Northwest having the best current odds (55%) and the Southwest the worst (14%). Beyond performance, the document notes that rising heat and humidity increase risks of heat-related illness and that climate-driven air quality issues, such as wildfire smoke, further threaten runner health.

Using Google Search data, the Yale Program on Climate Change Communication identifies that interest in climate change in the United States follows predictable cycles tied to Earth Day and the school year, as well as spikes driven by extreme weather. While heatwaves trigger nationwide interest, events like wildfires produce more localized spikes based on geographic exposure, such as the 2023 Canadian wildfires affecting the American Northeast. The authors argue that these trends can be used by decision-makers to time communications on risk, adaptation, and the transition to renewable energy when public awareness is highest.

Climate Central's analysis of 65 major U.S. cities reveals that approximately 76% of the 6.2 million K-12 public school students in these areas attend school in 'extreme urban heat zones,' where the built environment adds at least 8°F of additional heat. The average student in these cities attends school in a neighborhood that is 8.3°F hotter due to the built environment, with the highest average additional heat found in New York City (9.6°F). The report highlights that children are particularly vulnerable to heat-related health risks, which can impair academic achievement and development, while noting that 41% of public school districts need to update or replace HVAC systems in at least half of their schools.

The report argues that current US energy efficiency programs are overly complex, resulting in low participation rates (0.5% to 3% of households) and significant barriers for low-to-moderate income (LMI) families. To drive heat pump adoption and meet climate targets, the document recommends simplifying incentive structures (e.g., using $/unit instead of $/BTUh), aligning equipment specifications with federal standards like ENERGY STAR, and providing up-front discounts with prompt contractor reimbursement. It emphasizes the need for long-term funding (3-5 years), market development through workforce training, and a 'climate-forward' framework that prioritizes greenhouse gas reductions over simple energy savings. For equity, it suggests partnering with community-based organizations, setting LMI-specific budget targets, and funding pre-electrification measures like electrical panel upgrades.

C-PACE programs have provided $9 billion in financing for energy efficiency in 25 US states and cities, but most were established before embodied carbon data was available. The briefing proposes that C-PACE administrators update guidelines to classify low-embodied-carbon materials as "energy improvements," utilizing tools like Environmental Product Declarations (EPDs) and Whole Building Life Cycle Assessments. To incentivize this shift, the author suggests increasing financing limits for projects that demonstrate embodied carbon reduction. RMI is facilitating a working group through 2025 to develop nationwide best practices for integrating embodied carbon into C-PACE guidelines.

Analysis of 30 NFL home cities from 1970 to 2024 shows that all have warmed during the regular season (September to December), with an average increase of 2.8°F. Las Vegas and Minneapolis experienced the highest warming, while the 30 cities now face an average of 14 more extremely hot days than in 1970, increasing risks for athletes during summer training.

The report identifies approximately 900 private equity-owned healthcare locations in the Greater Philadelphia area, with significant concentrations in physical therapy, behavioral health, dental care, and home health services. It argues that private equity's 'roll-up' strategies and debt-funded dividend extractions increase the risk of bankruptcy, reduce quality of care, and drive up costs for patients. The document details specific local examples, such as the closure of Hahnemann University Hospital and the financial decline of Crozer Health, while calling for increased federal and state regulatory oversight of healthcare acquisitions.

The Community Guide to Cumulative Impacts explains how to identify and quantify the combined effects of multiple pollutants and social stressors on public health. It details existing state and city laws in the US that allow regulators to deny permits based on cumulative impacts and provides a framework for community organizing, including drafting model legislation and using environmental justice mapping tools.

The report argues that poor ballot design and inaccessible education materials lead to higher rates of uncounted votes, particularly among marginalized populations. It provides specific guidelines for election officials to reduce overvotes and undervotes through better layout, plain language, and accessibility features for voters with limited English proficiency and disabilities.

The document argues that climate change is a critical electoral issue in the 2024 US elections and urges journalists to move beyond 'red-blue' political binaries to report on the scientific consensus and local impacts. It provides specific questioning frameworks for candidates, methods for debunking common climate myths, and suggestions for localizing climate stories across sectors like infrastructure, housing, and energy. The guide emphasizes that reporting on the climate crisis is a matter of professional journalism rather than activism, citing the role of the press in holding power accountable during historical crises.

The briefing outlines how state energy offices can maximize the impact of the Inflation Reduction Act by enabling the 'stacking' of federal, state, and utility incentives for whole-home retrofits. It identifies key barriers to this process—such as a lack of public guidance, inconsistent program requirements, and excessive application processes—and suggests solutions like standardized eligibility and consolidated applications. Additionally, it encourages states to use flexible funding sources to cover gaps not fully addressed by the IRA, specifically health and safety repairs, cold climate heat pumps, and electrical upgrades.

The report examines various legislative attempts to curb the growth of corporate landlords in the US, focusing on strategies to deconsolidate the housing market. It analyzes proposed and enacted measures such as ownership caps in North Carolina, excise taxes in California and Ohio, and right of first refusal laws in California and Colorado. While many of these bills failed in committee due to political opposition, the report highlights successful examples like Los Angeles's 'mansion tax' and Colorado's protections for manufactured housing residents as models for future housing justice efforts.

The document outlines various real-world examples and tools that State Energy Offices can use to implement IRA Home Energy Rebates. It highlights strategies for equity mapping, workforce analysis, consumer outreach, and contractor certification. Key examples include Greenlink Analytics for equity data, the Love Electric campaign in Colorado for consumer awareness, and NYSERDA's Clean Heat Connect for supply chain alignment. The guide emphasizes the importance of people-centered support, weatherization integration, and comprehensive contractor training to ensure program success and equitable outcomes.

The survey finds that a majority of Pennsylvania likely voters attribute climate change to human activity and support holding oil and gas companies financially responsible for climate adaptation costs.

Pennsylvania's municipal governments are projected to spend at least $15.47 billion by 2040 to adapt to climate change, with stormwater drainage capacity representing the largest expense at $7.8 billion. The report highlights that these costs will disproportionately affect rural, high-poverty, and Environmental Justice areas, with some small municipalities facing annual per capita costs exceeding $1,000. The authors argue that major oil and gas companies should be held legally accountable for these costs rather than taxpayers.