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Iran is juggling peace talks with a spiralling water emergency that has been amplified by recent attacks on its civilian water infrastructure.War‑Driven Damage to Iran’s Water InfrastructureOn March 7, Foreign Minister Abbas Araghchi reported that a U.S. strike destroyed a freshwater desalination plant on Qeshm Island, cutting supply to 30 villages. Similar attacks on pipelines and energy facilities threaten additional sources of potable water, though full assessments are pending.Quantifying the Shortage: Drought Metrics and Infrastructure LossesAmir Kabir Dam held only 8 % of its capacity in November 2025.19 major dams across the country were reported dry.World Resources Institute’s Aqueduct data places Iran’s water‑stress score in the “extremely high” bracket (over 80 % of renewable supplies used annually).War‑related emissions between 28 Feb and 14 Mar released 5.6 million tonnes of CO₂ and other greenhouse gases.Broader Environmental and Socio‑Economic Ripple EffectsDecades of mis‑management—over‑irrigation, dam over‑building and subsidised water pricing—combined with climate‑driven drought have already strained reservoirs, rivers and groundwater. The war compounds these stresses by diverting reconstruction funds, increasing air‑pollution from burning oil‑gas facilities, and heightening public unrest, as seen in protests during 2021, 2018 and the 2025 water‑rationing warnings.What Lies Ahead for Iran’s Water SecurityIran has launched cloud‑seeding campaigns and announced penalties for excessive water use. President Masoud Pezeshkian urges modern agricultural techniques—hydroponics, aeroponics and greenhouse cultivation—to cut demand. However, continued conflict could further damage infrastructure and delay essential upgrades, making the water crisis “systemic” for the foreseeable future.

The Global Wildfire Paradox of 2025 Despite a global decline in the total area burned by wildfires in 2025, wealthier nations experienced some of the most destructive fire seasons on record, according to a comprehensive study examining the complex relationship between climate change, land use, and fire impacts. Uneven Distribution of Fire Devastation Catastrophic blazes claimed lives, homes, and jobs last year in California, Canada, Europe, and South Korea. The Scottish "megafire" torched more than 100,000 hectares, contributing to the UK breaking its record for burned area. Meanwhile, the Palisades and Eaton fires in Los Angeles ranked among the most destructive in US history, while record-breaking blazes in Spain and Portugal burned more than half a million hectares. South Korea experienced its biggest and deadliest wildfire season on record. The Declining Global Burn Area Despite these regional disasters, the 335 million hectares burned globally in 2025 represented the second-lowest total since 2002. This reduction is largely attributed to the expansion of African farms that have fragmented landscapes and hampered the spread of large savannah fires. The overall decrease in burned area led to a drop in carbon dioxide emissions to their third-lowest level on record. Economic and Human Cost Concentration While the total burn area decreased, the economic and human impacts became increasingly concentrated. Fires accounted for more than 38% of insured losses from weather disasters in 2025. In southern California and South Korea, high winds and dry vegetation pushed fires through densely populated areas, causing "exceptional mortality, mass evacuations, and major infrastructure losses." The toxic particles spewed by Canadian wildfires in 2023 killed 82,000 people worldwide, according to studies. Climate Amplification of Fire Risk Global heating is creating conditions that allow fires to spread more intensely, particularly at the wildland-urban interface where people are most at risk. Adverse weather, inflamed by carbon pollution, turned some of 2025's fires into explosive infernos. An attribution study found that the extreme weather fueling flames in Portugal and Spain was made 39 times more likely by climate breakdown. "If we continue to warm the planet, large-scale fires will continue to increase," warned David Garcia, an applied mathematician at the University of Alicante. Regional Disparities in Fire Impact The study reveals a growing disconnect between total area burned and real-world impacts. While global burn areas decreased, Canada experienced extreme wildfire emissions for the third year in a row. Since 2023, boreal forests in North America have emitted close to 4 billion tonnes of CO2, exceeding the total emissions of the preceding 15-year period. In the Mediterranean, drought and extreme heat drove severe blazes from Portugal to Turkey. Future Projections and Preparedness Experts warn that as the planet continues to warm, large-scale fires will become more frequent and intense. Adrián Regos, a landscape ecologist at the Biological Mission of Galicia, Spain, noted that last year's events illustrated how a relatively small number of extreme fires could dominate the ecological, social, and economic consequences of an entire fire season. This trend suggests that despite potential reductions in total burn area, the threat to human communities and infrastructure may continue to increase, necessitating improved preparedness and mitigation strategies.

Lead: A Milestone Reflection on Climate ActionIn its 250th edition, the Guardian's Down to Earth newsletter pauses to assess how the world's fight against climate change has unfolded since the high‑water mark of Cop26 in Glasgow, 2021.Looking Back: Cop26’s Promise and the Five‑Year Journey2021‑2022: Nations pledged to limit warming to 1.5°C, set net‑zero targets and pledged to phase out coal.2022‑2023: The Russian invasion of Ukraine and the Iran‑oil conflict drove crude prices above $100 /barrel, exposing fossil‑fuel vulnerabilities.2024‑2025: Populist governments rolled back environmental regulations, while renewable technology became cheaper and more widespread.Numbers That Matter: Public Awareness and Emissions GapsThe “Covering Climate Now” survey found that 80‑89 % of the global public recognise the climate threat and demand government action.Current national plans still point to a projected warming of about 2.8 °C, well above the agreed target.Renewable energy costs have fallen by roughly 70 % since 2020, making clean power “cheap, widely available and overwhelmingly popular.”Why the Momentum Slowed: Geopolitics, Economics and PopulismWar‑driven spikes in oil prices, the re‑election of climate‑skeptical leaders and the rise of populist rhetoric have eroded the optimism that surrounded Cop26, pushing many countries to backtrack on commitments.What Lies Ahead: Hopeful Trends and Persistent ChallengesDespite setbacks, advances in clean‑tech, growing public pressure and emerging green‑economy initiatives suggest a pathway forward, but the intertwined climate‑biodiversity‑economy crises demand coordinated global action.

The Need for Air Conditioning in the UK British homeowners are rapidly acquiring air conditioners as the climate crisis superheats our summers. An estimated 4m homes have an air conditioner, double the figure from three years ago. Can Air Conditioning Be Green? Because air-conditioning units use more energy than other cooling devices, this results in more carbon emissions. Using a portable unit for an average of eight hours a day during the summer would result in about 4.87kg of CO2 emissions, roughly equivalent to driving 18 miles. Options for Greener Air Conditioning One approach could be running it only when there is a high level of renewable energy on the grid – for example during the sunniest part of the day. You may choose to pre-cool rooms before the evening peak in electricity demand. Or you could power the air conditioner with a home battery that charges up during renewable energy surpluses, helping you make the most of renewables without owning them yourself. Types of Air Conditioning It’s important to note that not all air conditioners are alike. Portable versions were relatively inefficient. If you invest in built-in air conditioning, make sure you get the right size unit for the room you’ll be cooling. A wall-mounted unit powerful enough (12,000 BTU) to cool the average British bedroom costs about £750, plus £1,150 for installation. Alternative Cooling Methods Air conditioners work using the same principle as heat pumps – they move heat from one place to another with the help of a refrigerant fluid. But the devices generally referred to as “air-to-air heat pumps” are reversible and can provide heating as well as cooling. Homeowners who switched from oil or gas heating to an electric-powered air-to-air heat pump, and used it for winter heating and summer cooling, were decarbonising their homes.

The Failure of US Garbage Incinerators The nation's garbage incinerators are largely failing to eliminate Pfas 'forever chemicals' air pollution, and are putting people in largely low-income neighborhoods at risk, public health advocates and independent experts warn. The Industry's Misleading Claims A new industry trade group report alleges Minnesota's incinerators are reducing their forever chemical emissions by 99.6%. However, experts say the report is full of bad assumptions, incomplete data, and misleading language. The Health Risks of Pfas Pollution Pfas are a class of at least 16,000 compounds that have been linked to cancer, birth defects, decreased immunity, high cholesterol, kidney disease, and a range of other serious health problems. They are dubbed 'forever chemicals' because they do not naturally break down in the environment. The Impact on Low-Income Neighborhoods The incinerators are often located in low-income neighborhoods, putting vulnerable populations at risk. 'This trash becomes the problem of the poor and marginalized to deal with in their bodies,' said Nazir Khan, executive director of the Minnesota Environmental Justice Table. The Need for Stricter Regulations Experts say that stricter regulations are needed to address the issue of Pfas pollution. 'I'm not aware of any industrial-scale commercial incinerator that solves this problem,' said Michael Youhana, an attorney with the non-profit Earthjustice.

The Threat to Solar Energy Projects The US farm bill, passed by the House, includes a provision that could restrict federal funding for solar energy projects on prime farmland. This move has raised concerns among farmers, environmental groups, and solar industry advocates, who argue that it could hinder farmers' ability to access affordable energy and undermine efforts to promote renewable energy. The Impact on Farmers Farmers like George Hunt, who installed solar panels on his cow barn in Massachusetts, have benefited greatly from solar energy. Hunt received a grant from the Rural Energy for America Program (Reap) to cover a third of the cost, and he was able to pay off the loan with a solar energy credit from the state. However, with the new provision, farmers like Hunt may find it harder to access government help for solar projects. The Data Analysis The solar provision in the farm bill could have significant financial implications for farmers. For example, a study by the Solar Energy Industries Association (SEIA) found that local governments are increasingly restricting solar development on farmland. Additionally, the provision could lead to a de facto ban on solar panels made or assembled in countries like China, which accounts for about 80% of solar panel production. The Impact Analysis The farm bill's solar provision has sparked concerns about the impact on rural communities and the environment. Critics argue that the provision is misdirected and could undermine efforts to promote renewable energy and reduce greenhouse gas emissions. The provision could also lead to a loss of farmland and a negative impact on local economies. The Prediction The future of the farm bill and its solar provision is uncertain. The Senate is expected to mark up its own bill in June, and advocates are pushing for changes to the provision. If the provision remains, it could have significant implications for the solar industry and farmers' ability to access affordable energy.

Why Fans Are the Smart Summer Cooling ChoiceThe Guardian’s award‑winning tech journalist measured 16 fans and several evaporative coolers to see how they perform against a typical portable air‑conditioner that draws 1,000W (about 26p per hour). Fans in the test consumed between 8W and 60W, delivering a far lower electricity bill and carbon footprint while still moving enough air to make a noticeable temperature drop.Power Consumption Numbers Show Fans Beat Air‑ConditionersAirCraft Lume – 18W on top setting; could run 56 hours for the cost of one hour of air‑con.Dreo TurboCool misting fan 765S – 22W, best overall cooling performance.Devola desk fan – 12W, cheapest at £64.99.Shark FlexBreeze Pro Mist – 30W, premium misting option at £249.99.Swan Nordic evaporative cooler – 15W, lowest‑energy water‑based cooler at £69.Cooling Comfort Meets Carbon Savings for UK HouseholdsRunning a fan instead of an air‑conditioner can cut summer electricity use by up to 95 %, translating into lower bills and reduced greenhouse‑gas emissions. For a typical UK home, swapping a 1,000W air‑con for an 18W fan saves roughly £23 per month and avoids about 0.12 tCO₂ of emissions.What’s Next for Home Cooling in a Warming Climate?As heatwaves become more frequent, manufacturers are likely to focus on quieter, smarter fans with integrated sensors that adjust speed automatically. Expect more hybrid designs that combine low‑energy misting with airflow optimisation, giving consumers a wider menu of carbon‑friendly cooling solutions.

The United Nations' weather agency has warned that the planet is on track to experience its hottest year on record by the end of the decade, with climate risks intensifying across the globe.WMO Forecast Signals 86% Likelihood of New Hottest Year Within Five YearsIn a report released on Thursday, the World Meteorological Organization (WMO) stated there is an 86% chance that one of the next five years will surpass 2024 as the warmest year since records began. The agency also highlighted a 75% probability that the five‑year average temperature from 2026 to 2030 will exceed the 1.5 °C increase above pre‑industrial levels.Statistical Outlook: Probabilities, Temperature Gaps, and Regional Shifts86% chance of a new record year within the next five years.75% chance that the 2026‑2030 average exceeds 1.5 °C (2.7 °F) above pre‑industrial levels.Arctic winter temperatures projected to be 2.8 °C (5 °F) above the 1991‑2020 average, more than three‑and‑a‑half times the global rate.Rainfall expected to rise in the Sahel, Northern Europe, Alaska and Siberia, while the Amazon is forecast to become drier.Implications for the Paris Agreement and Global Climate PolicyAlmost 200 countries signed the Paris Agreement in 2016, pledging to limit warming to 1.5 °C. The WMO’s findings suggest the target is becoming increasingly unattainable unless emissions are cut dramatically. Michael Jacobs, professor of political economy at the University of Sheffield, warned that nations must accelerate renewable‑energy deployment and electrification. Simon Stiell, the UN climate chief, called recent European heatwaves a “brutal reminder” of the stakes.Looking Ahead: What 2030 Could Mean for Extreme Weather and Mitigation EffortsIf the projected trends materialise, the world can expect more frequent and intense heatwaves, stronger storms, and heightened stress on water resources. Policymakers will face pressure to tighten emissions‑reduction commitments, expand climate‑resilient infrastructure, and secure financing for adaptation in vulnerable regions. The next five years will be a decisive window for translating climate pledges into concrete action before the 2030 temperature threshold is crossed.

The World Meteorological Organization, in a UN‑commissioned report, warns that a record‑breaking hot year is almost certain by 2030, with climate‑driven risks accelerating across the globe.UN WMO Warns of Near‑Certain Record‑Hot Year by 2030The report, produced by the UK Met Office for the WMO, highlights an 86 % chance that at least one year between 2026‑2030 will outstrip 2024 as the hottest on record. An El Niño expected later this year could push the global temperature record as early as 2027. Lead author Dr Leon Hermanson notes the El Niño will raise the odds of a 2027 record year.Probability Metrics Highlight Escalating Heat Risks86 % chance of at least one year 2026‑2030 surpassing 2024’s temperature.75 % chance that the five‑year average (2026‑2030) exceeds 1.5 °C above pre‑industrial levels.Less than 1 % chance of any single year in that span exceeding 2 °C.96 % chance of an El Niño event Dec 2026‑Feb 2027 (NOAA forecast).35 % chance of a “super” El Niño, amplifying heat extremes.Implications for Human Health, Economies and Climate PolicyGlobal heating already claims one life per minute, a toll set to rise without rapid emissions cuts.Extreme heatwaves are battering the UK, Europe, India and broader Asia, threatening lives and economic productivity.The Arctic is projected to warm 2.8 °C above recent averages over the next five winters—more than three times the global rate.Rainfall patterns will shift: northern Europe, the Sahel, Alaska and Siberia likely to become wetter, while the Amazon is expected to dry out.Outlook: El Niño, Policy Action and the Race to Stay Below 2°CUN climate chief Simon Stiell stresses that protecting lives and economies hinges on “kicking the fossil‑fuel addiction much faster.” Clean power is now cheaper than fossil fuels, but scaling it quickly is essential to keep the 2 °C target within reach and to avoid the catastrophic impacts of exceeding 1.5 °C.