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154 results
Climate Resilience of the Water Sector in The Bahamas
The project addresses the vulnerability of The Bahamas' water sector to hurricanes, storm surges, and sea level rise, which threaten the nation's primary natural freshwater source: shallow groundwater lenses. The proposal outlines a strategy to shift the national water utility, Water and Sewerage Corporation (WSC), away from a costly and financially unsustainable reliance on reverse osmosis (RO) desalination toward the sustainable use of climate-resilient groundwater. This will be achieved through three main outputs: strengthening national water policy and legislation, establishing a national water resources monitoring network and management unit (WRMU) with a decision support system (DSS), and implementing physical infrastructure upgrades across six priority islands. The project aims to benefit 415,000 people, with 215,273 receiving direct infrastructure improvements.
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Document type: Report
Climate Change is Disrupting Air Travel
The document details how climate change disrupts U.S. transportation systems through acute events like hurricanes and chronic stressors like sea level rise. It highlights significant projected costs for asphalt maintenance and railroad delays, the vulnerability of coastal highways and bridges, and the necessity of proactive adaptation, such as using heat-resistant materials and nature-based solutions, to mitigate economic losses.
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Document type: Policy brief
Climate Change in the American Mind: Beliefs & Attitudes, Fall 2025
The report finds that a majority of Americans believe global warming is happening and is primarily human-caused, though many underestimate the level of public concern. While most perceive global warming as affecting U.S. weather and extreme events, few discuss the topic frequently with others.
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Document type: Report
Power After the Storm
The report analyzes power outage data from 2014 to 2024 in the central United States, specifically the MISO+ region, finding that all of the 100 worst outage days were caused by extreme weather. It highlights that the 10 most severe events occurred after 2020 and were often compound disasters, such as hurricanes combined with flooding or winter storms with tornadoes. The document argues that climate change is intensifying these risks—increasing the frequency of derechos, the rainfall of hurricanes, and the potential for severe winter outbreaks—while disproportionately impacting socially vulnerable communities. It recommends that utilities, states, and regional operators implement comprehensive climate risk assessments, accelerate the clean energy transition, and engage in meaningful community partnership to build a resilient grid.
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Document type: Report
Attribution Science 101
The document introduces attribution science as a method to measure how human-caused climate change affects the likelihood, frequency, and intensity of weather events by comparing current observations with simulated 'counterfactual' worlds. It details Climate Central's specific tools, such as the Climate Shift Index (CSI) for air and sea surface temperatures and the Tropical Cyclone CSI for hurricane wind speeds. The guide distinguishes between different types of attribution—event, trend, source, and impact—and notes that while temperature-related events are highly quantifiable, other severe weather like tornadoes remains an active area of research.
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Document type: Guide
Americans understand that global warming is increasing homeowners insurance
A May 2025 survey of 1,040 U.S. adults found that while 82% of Americans believe homeowners insurance costs are increasing, only 48% attribute this rise to global warming. In contrast, 69% link the increases to disasters such as hurricanes, floods, and wildfires. Other highly cited drivers include inflation (70%) and insurance company profits (69%). A significant political divide exists regarding the role of global warming, with 71% of liberal Democrats and only 27-28% of Republicans acknowledging its contribution.
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Document type: Report
About half of Americans understand that global warming is increasing homeowners insurance costs
A May 2025 survey of 1,040 U.S. adults found that while 82% believe homeowners insurance costs are increasing, only 48% attribute this rise to global warming. Other factors, including inflation (70%), corporate profits (69%), and weather-related disasters (69%), are more widely cited as contributors. A significant political divide exists: 71% of liberal Democrats and 61% of moderate/conservative Democrats link global warming to rising costs, compared to only 27% of liberal/moderate Republicans and 28% of conservative Republicans.
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Document type: Fact sheet
Comments on the Department of Energy’s (DOE) recent report, “A Critical Review of Impacts of Greenhouse Gas Emissions on the U.S. Climate.”
Climate Central argues that the Department of Energy (DOE) report, “A Critical Review of Impacts of Greenhouse Gas Emissions on the U.S. Climate,” fails to represent the scientific consensus and should not serve as a policy basis. The organization asserts that the DOE report selectively ignores two decades of scientific developments and omits major international assessments. Specifically, Climate Central contends that the DOE understates the link between human-caused climate change and the increasing intensity, rainfall, and rapid intensification of hurricanes, as well as the acceleration of sea-level rise. It further argues that the DOE's analysis of temperature extremes is misleading by focusing on the 1930s Dust Bowl era without global context and that its assessment of wildfires in the western U.S. is incomplete. Finally, the document disputes the DOE's claims regarding solar variations and the validity of extreme event attribution (EEA) methodologies, while arguing that the DOE's use of GDP to downplay disaster costs ignores the increasing physical hazards of climate change.
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Document type: Statement
Climate Change in the American Mind: Beliefs & Attitudes
The Fall 2025 'Climate Change in the American Mind' report finds that 72% of Americans believe global warming is happening, with 58% attributing it primarily to human activities. While 64% of adults express worry about global warming, a significant majority (61%) underestimate the prevalence of this concern among the general public. The report highlights a high level of perceived risk, with majorities believing global warming will harm plant and animal species (69%) and future generations (68%). However, personal and social engagement remains relatively low, as 44% of respondents say they never discuss global warming with family and friends. Consumer activism is present but limited, with 31% of Americans reporting they have rewarded companies taking steps to reduce global warming through their purchases in the past year.
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Document type: Report
Climate Change in the American Mind: Beliefs & Attitudes
The Fall 2025 report on 'Climate Change in the American Mind' reveals that 72% of Americans believe global warming is happening, with 58% attributing it primarily to human activity. While 64% express worry about global warming, a significant majority (61%) underestimate the prevalence of this concern among their fellow citizens. The report highlights a strong perception that global warming is currently affecting U.S. weather, particularly extreme heat (74%), wildfires (72%), and droughts (72%). Despite these beliefs, frequent discussion of the topic remains low, with 44% of adults stating they never discuss global warming with family and friends. Personal importance of the issue has declined to 59%, the lowest level in 10 years. Consumer activism is present but limited, with 31% rewarding climate-friendly companies and 26% punishing those opposing climate action over the past year.
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Document type: Report
Will states lead — or leave US communities to face disaster alone?
The document warns that intensifying hurricanes, fueled by fossil fuel-driven climate change, are posing an escalating threat to US communities, especially those near petrochemical facilities. It highlights a systemic failure where the US government is dismantling essential safety agencies and forecasting tools, while insurance companies profit from fossil fuel investments while withdrawing coverage from vulnerable homeowners. The authors call on state and local leaders to implement safety rules and halt fossil fuel expansion to protect residents from toxic releases and financial ruin.
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Document type: Statement
How Big Oil is Fueling the Insurance Crisis And Why State Policymakers Should Act
The document examines how climate change is creating a home insurance crisis in the U.S., characterized by skyrocketing premiums and widespread policy non-renewals. It asserts that 'Big Oil' companies, who knew about the risks of fossil fuels as early as 1954, are responsible for these conditions. The report highlights specific state-level crises in Florida, California, and Hawaiʻi, and advocates for policy solutions—such as subrogation and legislative surcharges—to shift the financial burden from policyholders to the fossil fuel industry.
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Document type: Report
Climate Change in the American Mind: Politics & Policy, Spring 2025
A May 2025 survey of 1,040 American adults reveals that 69% believe global warming is happening and 60% attribute it to human causes. While 65% of respondents are at least 'somewhat worried' and many perceive risks to their local communities from extreme weather, 65% rarely or never discuss the issue with family and friends. The report also highlights a sense of personal agency, with 60% disagreeing that it is too late to act and 53% disagreeing that technology alone can solve the problem without individual life changes.
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Document type: Report
Climate Security Questions Ahead of US Secretary of Commerce Lutnick Budget Hearings
The Center for Climate and Security (CCS) urges US lawmakers to challenge Secretary of Commerce Lutnick on proposed FY 2026 budget cuts to NOAA. The briefing highlights risks to weather forecasting, climate monitoring, and public safety, noting that funding lapses have already disabled four regional climate centers and that 27,000 years of staff experience have been lost. CCS specifically questions the decommissioning of 14 data services, the status of the Atlas 15 precipitation project, and the lack of funding for extreme heat monitoring, arguing that these cuts undermine the $7 billion private weather services market and US national security.
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Document type: Briefing
Keeping Everyone’s Lights On
The report examines the vulnerabilities of the US power grid to climate change, highlighting how extreme heat, wildfires, winter storms, and hurricanes cause widespread outages. It argues that current planning focuses on reliability under typical conditions rather than resilience to high-impact, low-frequency events. The authors emphasize that structural inequities, such as the legacy of redlining, leave low-income communities and people of color disproportionately vulnerable to the life-threatening consequences of power loss. The document recommends that regional transmission organizations (RTOs) and independent system operators (ISOs) adopt forward-looking climate risk assessments, integrate energy justice principles, and reform economic metrics like the Value of Lost Load (VOLL) to prioritize human vulnerability over economic activity.
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Document type: Report
State-Level Climate Security Education: South Carolina
The document details South Carolina's high susceptibility to sea level rise, hurricanes, and droughts, noting that 101 weather disasters with losses over $1 billion occurred between 1980 and April 2025. It highlights the critical role of federal support from NOAA, FEMA, and USDA in maintaining coastal resilience, providing disaster aid, and supporting military installations. The briefing warns that proposed FY 2026 budget cuts—including the elimination of the Sea Grant program and significant reductions in coastal research and FEMA funding—would severely hinder the state's ability to manage climate risks and protect its economy and national security infrastructure.
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Document type: Briefing
Summer Weather Reporting Guide
The guide outlines the relationship between climate change and four types of summer extreme weather. It notes that heat is the deadliest weather event, killing nearly 500,000 people annually since 2000 globally, and that fossil fuel pollution drives these heat waves. It explains that oceans absorb nearly 90% of Earth's excess heat, which supercharges hurricanes by increasing intensity, rain rates, and storm surges. Regarding flooding, the guide states that a warmer atmosphere holds more moisture, leading to more frequent and intense heavy rainfall since the 1950s. Finally, it attributes the increasing threat and length of wildfire seasons to rising temperatures and erratic rainfall patterns that make vegetation more flammable.
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Document type: Guide
Danger Season 2025 microsite methodology
The Danger Season 2025 microsite integrates National Weather Service (NWS) alerts, population data, social disadvantage metrics from the Climate & Economic Justice Screening Tool (CEJST), Climate Central’s Climate Shift Index (CSI), and EPA/AirNow’s Air Quality Index (AQI). The methodology focuses on the period from May to October, identifying counties under extreme weather alerts or experiencing unhealthy air quality. It calculates four daily indicators: the total population facing alerts, the percentage of disadvantaged people affected, the percentage of the population facing at least one alert, and the proportion of extreme heat alerts attributable to climate change. The scope includes the contiguous United States, Alaska, Hawai'i, Puerto Rico, and the U.S. Virgin Islands, though certain datasets like CSI and AQI have specific geographic gaps.
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Document type: Research paper
Fiche de renseignement : changements climatiques et tempêtes
The document details the link between rising global temperatures and the intensification of extreme weather events in Canada, such as hail, windstorms, and hurricanes. It highlights significant insured losses in provinces like Alberta, Quebec, and Ontario, and notes a trend of tornado-prone areas shifting eastward. The text emphasizes the need for improved early warning systems, resilient building codes, and nature-based coastal protections to adapt to these increasing risks.
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Document type: Fact sheet
Climate change is increasing the intensity of extreme weather across the globe—including storms
Climate change is intensifying extreme weather globally, with warmer temperatures providing more energy for storms. In Canada, this manifests as more frequent and severe convective storms, including hailstorms, windstorms, and hurricanes. Significant economic losses have already occurred, such as a $3.2 billion hailstorm in Calgary in 2024. Regional projections indicate increased storm intensity in the Prairies, eastern Canada, and Atlantic Canada, while the Pacific coast faces a higher likelihood of extreme atmospheric river events. Adaptation needs include improved forecasting, updated building codes for wind and hail resilience, and revised land-use policies to move development away from high-risk areas.
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Document type: Fact sheet