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The document argues that while US border crossings have declined due to restrictive policies, climate-driven pressures in the Americas persist. It encourages journalists to link economic migration to slow-onset climate impacts and provides resources for reporting on climate adaptation and displacement.

The document argues that while migrant crossings at the US-Mexico border have decreased due to restrictive policies, climate pressures in Central and South America persist. It encourages journalists to look beyond 'economic migration' to find the underlying climate drivers, such as crop failure and water scarcity, and to view migration as a form of climate adaptation.

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.

Between 2020 and 2024, climate change increased the number of 'pregnancy heat-risk days'—days exceeding the 95th percentile of local temperatures—in every analyzed country. In 90% of countries and 63% of cities, these risk days at least doubled compared to a world without climate change. The most significant increases occurred in developing regions, particularly the Caribbean, where 15 countries saw an average of at least 60 additional risk days annually, representing roughly one-fifth of a typical pregnancy. Beyond heat, the report notes that climate-driven air pollution, flooding, and infrastructure damage further threaten maternal health and birth outcomes.

In April 2025, 182 out of 191 analyzed U.S. cities were warmer than normal, with an average temperature anomaly of 2.1°F. The Southeast region experienced the most significant anomalies and the highest number of days with a Climate Shift Index (CSI) of 2 or above, indicating temperatures at least twice as likely to occur due to climate change. Shreveport, Louisiana, recorded the highest anomaly at 6.33°F, while Reno, Nevada, showed the fastest long-term April warming since 1970, increasing by 8.0°F.

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.

The document outlines how climate change increases the prevalence of climate-sensitive diseases and strains healthcare infrastructure, particularly in vulnerable border communities and among migrant populations.

The document outlines how climate change increases the prevalence of climate-sensitive diseases and strains health infrastructure, particularly in lower-income areas and along the U.S.-Mexico border. It highlights the risks faced by migrants and local populations, including heatstroke, Valley fever, and mosquito-borne illnesses, while suggesting specific reporting angles and expert resources.

Climate Central analysis indicates that human-caused climate change has significantly increased the risk of sub-optimal temperatures (21°C or higher) that impair elite soccer performance during the 2025 UEFA Champions League knockout stages. Comparing current data to the 1970s, the likelihood of such heat has risen for all 23 analyzed stadiums, with the most dramatic increase occurring at Lluís Companys Olympic Stadium in Barcelona, where the risk increased by 800%. This temperature threshold is critical because research shows that players cover less total distance, sprint less, and perform fewer high-intensity efforts when temperatures reach or exceed 21°C.

The 25 most-visited national parks in the contiguous U.S. are projected to see a nearly five-fold increase in extremely hot days per year by 2050 under a 'warm wet' scenario, and up to a ten-fold increase under a 'hot dry' scenario. These trends, combined with record-breaking visitation, increase the risk of heat-related illnesses for visitors and threaten biodiversity and infrastructure. The National Park Service is implementing adaptation strategies, such as the Climate Change Response Strategy, to mitigate these risks.

A study by World Weather Attribution found that human-induced climate change made a March 2025 heatwave in Central Asia approximately 4 °C hotter and three times more likely. The event saw temperatures exceeding 30 °C even at 1000m altitude, affecting regions including Kazakhstan, Uzbekistan, Turkmenistan, Tajikistan, and Kyrgyzstan. The analysis notes that climate models underestimate the recent increase in March temperatures, meaning the reported influence of climate change is a conservative estimate. The heatwave coincided with critical agricultural periods, such as the sowing of spring wheat in Kazakhstan and the flowering of export fruit crops, potentially impacting yields in a region where agriculture employs up to 50% of the workforce.

The analysis finds that human-caused climate change increased heat-related health risks for billions globally between December 2024 and February 2025, with a significant impact on Africa.

The report finds that human-caused climate change significantly increased extreme heat and health risks globally from December 2024 to February 2025. At least 1.8 billion people experienced temperatures at least twice as likely due to climate change every day of the period, with exposure peaking at 3 billion people on February 28, 2025. Africa was particularly affected, with 293 million people experiencing 30 or more 'risky heat days' added by climate change. The analysis also highlights that 110 out of 220 analyzed countries and 287 out of 940 cities saw the average person experience strong climate influence for at least one-third of the season.

The statement describes the systemic marginalization of approximately 2.2 million U.S. farmworkers, who face dangerous working conditions, toxic pesticide exposure, and housing insecurity. It emphasizes how the threat of mass deportation and anti-immigrant rhetoric allows employers to bypass labor laws and increases worker vulnerability to climate-driven disasters. The author calls for specific policy interventions, including banning toxic pesticides and reinstating heat safety rules, while noting that anti-immigrant crackdowns threaten the national food supply.

The document warns of a rare two-day 'Moderate Risk' of severe weather in the Midwest and Deep South on March 14-15, 2025, driven by temperatures 15-25°F above mid-March averages. It links this early-season warmth to human-caused climate change and notes a long-term increase in Convective Available Potential Energy (CAPE) and the frequency of extreme tornado outbreaks in the U.S.

A World Weather Attribution analysis finds that human-induced climate change made the extreme heat in South Sudan in February 2025 at least 2C hotter and at least 10 times more likely. The report highlights that women and girls bear disproportionate impacts due to their roles in agriculture and unpaid care work, as well as systemic inequalities in education and health. The study notes that extreme heat exacerbates malnutrition for 860,000 children under five and increases risks for 1.1 million people in overcrowded shelters due to conflict.

In February 2025, U.S. temperature anomalies were split, with 92 cities warmer and 99 cooler than the 1991-2020 normal. Despite an average anomaly of -0.3°F and significant cold in the Northern Rockies and Plains, no city set a low temperature record for the month. Conversely, Phoenix, Arizona, recorded its hottest February on record. Analysis using the Climate Shift Index (CSI) indicates that temperatures in many cities remained warmer than they would have been without climate change, as more cities experienced days with positive than negative CSI values. Long-term trends show that 189 out of 191 analyzed stations have warmed since 1970, with Juneau, Alaska, being the fastest-warming station for February.

A May 2025 survey of 1,040 U.S. adults shows that 69% believe global warming is happening, with 60% attributing it primarily to human causes. While 65% of Americans express worry and 61% feel a personal responsibility to help, social engagement remains low, as 65% rarely or never discuss the issue with family and friends. A majority of respondents perceive global warming as currently harming people in the U.S. and affecting various extreme weather events, including extreme heat (75%) and wildfires (72%). Despite these concerns, 53% disagree that new technologies can solve the problem without significant individual lifestyle changes, and 55% believe individual actions make a difference.

The report finds that an increasing number of Americans perceive global warming as a threat to public health, specifically identifying heat stroke, air pollution, and respiratory issues as growing risks. While 39% believe global warming harms the health of Americans generally, only 16% feel it harms their own health. There is growing recognition of disproportionate impacts on low-income people and people of color. Regarding energy, coal and nuclear power are viewed as the most harmful to health, though perceptions of wind and solar as harmful have slightly increased. Trust in first responders, primary care physicians, and climate scientists remains high as sources of health-related climate information.

In February 2025, Brazil experienced a record heatwave where temperatures reached up to 44°C, affecting over 170 million people. The event, linked to climate change, caused significant public health strain in Rio de Janeiro, water shortages in favelas, and school delays in Rio Grande do Sul.