Search Climate Insights Directory

The document outlines the technical structure and legal permissions for the Climate TRACE Inventory (v5.11.0). It defines the metadata for emissions source, country-level, confidence, and ownership files, while specifying that most data is available under the Creative Commons Attribution 4.0 International Public License. It also provides a comprehensive list of recommended citations for various sectors and identifies third-party data sources used for specific emissions estimates.

Climate change accounted for 27% of the rate of heat-related emergency room visits in the U.S. during 2018-2025. August 2026 was the warmest August on record globally, with record warmth affecting 13.2% of global land and ocean areas. In the U.S., Summer 2026 was the warmest on record for the contiguous region, and August 2026 was the warmest August for average, maximum, and minimum temperatures since 1895. Drought affected at least 81% of the contiguous U.S. as of September 8, 2026, and nearly 8.3 million acres burned year-to-date, driven by increased 'fire weather' days. Attribution analysis using the Climate Shift Index (CSI) indicates human-caused climate change drove summertime warming trends in 91% of analyzed U.S. cities. Additionally, a strong El Niño event is projected to peak around February 2027, with global temperature anomalies potentially reaching 1.7C above pre-industrial levels.

The report details a 50-year campaign by the natural gas industry to brand its product as "clean energy" and a "bridge fuel." It argues that this was a strategic fraud designed to protect residential markets from electrification and later to facilitate a massive expansion of infrastructure. The document highlights the role of industry-funded research, specifically the Gas Research Institute (GRI), and a flawed 1996 joint study with the EPA that underestimated methane emissions to legitimize gas as a climate solution. It further describes how the industry used voluntary programs like Natural Gas STAR to fend off mandatory regulations and co-opted environmental organizations to lend credibility to its claims.

June 2026 was the second-warmest June on record globally, with the Arctic experiencing its warmest June ever. In the U.S., 66% of the contiguous region faced abnormally dry or drought conditions by July 7, 2026, and the West and Southwest regions saw their warmest January-June period on record. A very strong El Niño is forecast to develop between October and December 2026, with an 81% probability, likely pushing global temperatures to or above 1.5C by October. Climate Central's analysis indicates human-caused climate change is a key driver of summertime warming in 91% of analyzed U.S. cities.

The authors argue that the Paris Climate Agreement's 'name and shame' approach fails because it ignores the science of cooperative agreements on common resources. They propose a climate club where members commit to net-zero CO2 emissions by 2050, using a combination of high import tariffs and export taxes on non-members, a uniform tariff surcharge (up to 10%) on non-member imports, and penalties for members who miss intermediate goals. To ensure WTO compatibility, the proposal relies on GATT Articles XX(b) and XX(g), allowing any regulatory approach that achieves emissions reductions. The plan includes a Multilateral Fund for developing countries and suggests similar structures for methane and nitrous oxide, drawing inspiration from the Montreal Protocol.

The May 2026 report highlights that the month was the second-warmest on record globally, with carbon dioxide levels reaching a new monthly peak of 432.3 ppm. In the United States, spring 2026 was the second-warmest on record for the contiguous U.S., while 77% of the region experienced abnormally dry or drought conditions as of early June. The report also notes a developing potentially very strong El Niño and record-low snowpack in several western states.

April 2026 was the fourth-warmest month globally on record, with the contiguous U.S. experiencing its third-warmest April. The report highlights severe drought in the Southeast U.S., record-low Western snowpack, and a persistent marine heat wave off the coasts of California and Mexico. Using the Climate Shift Index (CSI), the analysis attributes springtime warming trends in 98% of analyzed U.S. cities to human-caused climate change, with exceptional warmth noted in Honolulu and San Juan. Forecasts indicate a high probability of a strong El Niño developing later in 2026, potentially driving global temperature anomalies above 1.8°C relative to pre-industrial levels by early 2027.

The study evaluated emissions from charcoal, kerosene, LPG, and electricity in Kibera, Nairobi. It found that charcoal and kerosene produce the highest concentrations of pollutants, while LPG and electricity produce low concentrations. Ambient PM2.5 levels in the households were 14.2 times higher than the World Health Organization's 24-hour threshold.

The document highlights that US farmers apply 30 to 50 percent more synthetic nitrogen fertilizer than crops can absorb, leading to significant economic waste and greenhouse gas emissions. It advocates for the next food and farm bill to increase funding for USDA programs like EQIP and CSP to support soil health and climate resilience, particularly for socially disadvantaged farmers.

2025 was Earth's third-warmest year on record, with average temperatures 1.3°C above pre-industrial levels. This continues a heat streak driven by fossil fuel pollution, pushing the planet toward the 1.5°C long-term warming limit, which could be exceeded by 2030. While global electricity demand is increasingly met by renewables, the U.S. has recently rolled back clean energy policies and withdrawn from key international climate agreements.

January 2026 was the fifth-warmest January on record globally, characterized by significant temperature anomalies in the U.S. West and record-low snowpacks in several states. The document highlights the transition of NOAA to the Relative Oceanic Niño Index (RONI) to better account for climate change in ENSO tracking. Attribution analysis using the Climate Shift Index (CSI) indicates that extreme warmth in the northern U.S. and specific cities like San Juan and Honolulu was strongly driven by carbon pollution.

The document debunks various climate myths, asserting that current global warming is caused by human CO2 emissions and supported by a scientific consensus of over 99%. It clarifies the difference between weather and climate, rejects the 'urban heat island' effect as a primary driver of warming, and argues that climate action is an economic risk management strategy rather than a political agenda. It further highlights the limitations of biological adaptation, the severe risks of exceeding a 1.5°C temperature increase, and the availability of existing technologies to mitigate the worst impacts.

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 document assesses the potential for an Emissions Trading System for Agriculture (Agri-ETS) in the EU, arguing that such a system would only be effective if it targets large-scale polluters, avoids free allowances and carbon offsets, and is integrated into a wider suite of reforms. It highlights the risks of 'GHG tunnel vision' and the necessity of reforming the Common Agricultural Policy (CAP) to stop subsidising harmful practices. The author advocates for a 'Just Transition Fund for Agri-food' to support small-scale farmers using Agri-ETS revenues.

The document explains that human activities, primarily the burning of fossil fuels, have increased average global temperatures by approximately one degree Celsius since 1880. It details the resulting impacts, including more frequent extreme weather, rising sea levels, and ocean acidification. The text outlines strategies for addressing these challenges through climate mitigation, adaptation, and resilience, while describing the roles of the U.S. government, corporations, and the United Nations in implementing these solutions.

The document explains that global warming, driven primarily by human-caused greenhouse gas emissions from fossil fuels and agriculture, has increased average global temperatures by approximately 1 degree Celsius since 1880. It details the resulting impacts, including more frequent extreme weather events, rising sea levels, and ocean acidification. The text outlines various responses, such as the transition to renewable energy, energy efficiency, and the roles of the United Nations and the U.S. government in international agreements like the Paris Agreement. It also defines key concepts such as climate adaptation, mitigation, and resilience, and discusses the role of climate finance in supporting these efforts.

The document outlines the global feedback loop between climate change and wildfires, while highlighting the specific vulnerabilities of border communities and migrants in the US-Mexico region. It provides a framework for reporting on transboundary air pollution, the health risks of smoke exposure for marginalized groups, and the role of cross-border fire management coordination.

The document analyzes global agricultural greenhouse gas (GHG) emissions, noting that the sector accounted for approximately 20% of global anthropogenic emissions in 2022. It identifies ruminant livestock and deforestation as the primary drivers of these emissions and highlights significant regional variations in emission intensities. The author argues that coupled subsidies and market price supports incentivize environmentally harmful practices and recommends repurposing these funds toward sustainable management, innovation, and uncoupled payments to reduce the sector's carbon footprint while balancing food security and livelihoods.

The document argues that the market price of fossil fuels fails to account for significant 'hidden costs' or externalities occurring during extraction, transport, and combustion. It details the severe health impacts of coal mining, such as black lung and cardiovascular disease, and the environmental degradation caused by mountaintop removal in Appalachia. The paper also examines the risks of oil and gas drilling, including methane leakage, water contamination from fracking, and catastrophic spills. Finally, it quantifies the economic burden of air pollution and global warming emissions, contrasting these with the lower impacts of renewable energy sources.