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Carbon pricing, efficiency regulations, subsidies for clean technologies, and information standards interact in ways that can reinforce or contradict each other, depending on the institutional and economic context in which they are applied. The conclusion is that fragmented policies cannot respond to a systemic crisis.
What the ten climate insights show about the failure to treat climate, water, health, biodiversity, and economy as separate problems
What unifies the ten insights is the same conclusion that appears in reports like the Planetary Health Check 2025 and the State of the Climate Report: deteriorating systems—climate, biodiversity, aquifers, public health, and economic productivity—are interconnected in ways that current policies do not yet adequately capture. The crisis is not organized by ministries, sectors, or separate spreadsheets.
Treating each of these themes in isolation may seem administratively simpler, but it is insufficient given the nature of the problem.
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The Planetary Health Check confirmed what scientists feared: the window to reverse the seven overshot planetary systems is five years before it closes, and none of them are improving, while the models that were supposed to predict what comes next admit that they never simulated a planet in this state.
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Cuba is without fuel, without energy, and without a way out, but a 21-year-old young man set up a homemade solar panel factory that has already equipped more than 15 electric tricycles, increased the vehicles’ range, and is saving the livelihood of workers who no longer had a way to get around the island’s streets.
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Few remember, but the 2024 drought in the Amazon already affects transport, energy, and agriculture. Rivers are reaching critical levels, smoke covers cities, and the scenario triggers a global alert about climate change.
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São Paulo Government launches fire prevention program on highways to protect rural areas, agricultural and livestock production, and the environment
Warming affects dengue, dengue strains health systems, heat reduces productivity, loss of productivity diminishes adaptive capacity, falling aquifers compromise irrigation, and degraded ecosystems reduce carbon absorption capacity.
The report does not propose a single solution. It proposes a prerequisite to any solution: recognizing that the problem is systemic. Fragmented responses to a systemic problem are, mathematically, insufficient. The question that remains is whether governments will continue to treat climate, water, biodiversity, health, and economy as separate crises or as parts of the same system in accelerated deterioration.
The insight on effective policy combinations is perhaps the most pragmatic. Accumulated research on emissions reduction shows that no single measure is sufficient.
Carbon pricing, efficiency regulations, subsidies for clean technologies, and information standards interact in ways that can reinforce or contradict each other, depending on the institutional and economic context in which they are applied. The conclusion is that fragmented policies cannot respond to a systemic crisis.
What the ten climate insights show about the failure to treat climate, water, health, biodiversity, and economy as separate problems
What unifies the ten insights is the same conclusion that appears in reports like the Planetary Health Check 2025 and the State of the Climate Report: deteriorating systems—climate, biodiversity, aquifers, public health, and economic productivity—are interconnected in ways that current policies do not yet adequately capture. The crisis is not organized by ministries, sectors, or separate spreadsheets.
Treating each of these themes in isolation may seem administratively simpler, but it is insufficient given the nature of the problem.
Warming affects dengue, dengue strains health systems, heat reduces productivity, loss of productivity diminishes adaptive capacity, falling aquifers compromise irrigation, and degraded ecosystems reduce carbon absorption capacity.
The report does not propose a single solution. It proposes a prerequisite to any solution: recognizing that the problem is systemic. Fragmented responses to a systemic problem are, mathematically, insufficient. The question that remains is whether governments will continue to treat climate, water, biodiversity, health, and economy as separate crises or as parts of the same system in accelerated deterioration.
Carbon credit markets, a central financing mechanism for many removal strategies, face systemic integrity challenges.
Studies published in 2024 and 2025 identified that a significant fraction of issued credits does not represent actual CO₂ removal, either because forestry projects did not meet projections, or because they accounted for deforestation reductions compared to hypothetical scenarios that would never materialize independently of the credit.
The insight on effective policy combinations is perhaps the most pragmatic. Accumulated research on emissions reduction shows that no single measure is sufficient.
Carbon pricing, efficiency regulations, subsidies for clean technologies, and information standards interact in ways that can reinforce or contradict each other, depending on the institutional and economic context in which they are applied. The conclusion is that fragmented policies cannot respond to a systemic crisis.
What the ten climate insights show about the failure to treat climate, water, health, biodiversity, and economy as separate problems
What unifies the ten insights is the same conclusion that appears in reports like the Planetary Health Check 2025 and the State of the Climate Report: deteriorating systems—climate, biodiversity, aquifers, public health, and economic productivity—are interconnected in ways that current policies do not yet adequately capture. The crisis is not organized by ministries, sectors, or separate spreadsheets.
Treating each of these themes in isolation may seem administratively simpler, but it is insufficient given the nature of the problem.
Warming affects dengue, dengue strains health systems, heat reduces productivity, loss of productivity diminishes adaptive capacity, falling aquifers compromise irrigation, and degraded ecosystems reduce carbon absorption capacity.
The report does not propose a single solution. It proposes a prerequisite to any solution: recognizing that the problem is systemic. Fragmented responses to a systemic problem are, mathematically, insufficient. The question that remains is whether governments will continue to treat climate, water, biodiversity, health, and economy as separate crises or as parts of the same system in accelerated deterioration.
Carbon credit markets, a central financing mechanism for many removal strategies, face systemic integrity challenges.
Studies published in 2024 and 2025 identified that a significant fraction of issued credits does not represent actual CO₂ removal, either because forestry projects did not meet projections, or because they accounted for deforestation reductions compared to hypothetical scenarios that would never materialize independently of the credit.
The insight on effective policy combinations is perhaps the most pragmatic. Accumulated research on emissions reduction shows that no single measure is sufficient.
Carbon pricing, efficiency regulations, subsidies for clean technologies, and information standards interact in ways that can reinforce or contradict each other, depending on the institutional and economic context in which they are applied. The conclusion is that fragmented policies cannot respond to a systemic crisis.
What the ten climate insights show about the failure to treat climate, water, health, biodiversity, and economy as separate problems
What unifies the ten insights is the same conclusion that appears in reports like the Planetary Health Check 2025 and the State of the Climate Report: deteriorating systems—climate, biodiversity, aquifers, public health, and economic productivity—are interconnected in ways that current policies do not yet adequately capture. The crisis is not organized by ministries, sectors, or separate spreadsheets.
Treating each of these themes in isolation may seem administratively simpler, but it is insufficient given the nature of the problem.
Warming affects dengue, dengue strains health systems, heat reduces productivity, loss of productivity diminishes adaptive capacity, falling aquifers compromise irrigation, and degraded ecosystems reduce carbon absorption capacity.
The report does not propose a single solution. It proposes a prerequisite to any solution: recognizing that the problem is systemic. Fragmented responses to a systemic problem are, mathematically, insufficient. The question that remains is whether governments will continue to treat climate, water, biodiversity, health, and economy as separate crises or as parts of the same system in accelerated deterioration.
Report Ten New Insights in Climate Science 2025/2026 shows how extreme heat, aquifers, dengue, biodiversity, and economy form a systemic climate crisis.
According to Global Sustainability, the report Ten New Insights in Climate Science 2025/2026, published in February 2026 by Cambridge University Press, is the most comprehensive edition of the annual synthesis that, since 2019, identifies the most relevant scientific advances for climate policies. The document was produced by 70 researchers, with contributions from more than 150 experts from institutions on all continents, and covers research published between January 2024 and June 2025.
What distinguishes the 2025/2026 edition is not just the severity of individual diagnoses, but the convergence of multiple systems in simultaneous deterioration. The ten insights document problems that might seem independent on a superficial reading: ocean temperature, underground aquifers, dengue, economic productivity, biodiversity, carbon sinks, and CO₂ removal policies.
The report shows, with increasing precision, that these problems are not independent. They are connected manifestations of the same systemic crisis, seen from different angles. And the climate policies designed to solve each one separately are, repeatedly, missing the interaction between the systems.
Record heat in 2023 and 2024 left a climate legacy that goes beyond the global average temperature
The first insight of the report sets the context for all the others: 2023 and 2024 were the two hottest years ever recorded in instrumental history, breaking records with margins that surprised even pessimistic climate models. But the central point identified by the researchers goes beyond the global average temperature number.
The Earth’s energy imbalance, the difference between incoming solar energy and outgoing infrared energy, is at a high and rising level. This means that the planet is accumulating heat at a rate that surface temperature alone cannot show.
A large part of this excess heat goes to the oceans, which have absorbed more than 90% of the additional global warming of recent decades. The rest contributes to melting ice, warming the atmosphere, and raising the temperature of the continents.
The implication of this high energy imbalance is direct: even if greenhouse gas emissions were immediately zeroed, the planet would continue warming for decades due to the inertia of the heat already accumulated in the oceans. The climate system has a response delay, and 2023 and 2024 indicated that this delay is shortening, with the accumulated heat appearing on the surface faster than some models projected.
Terrestrial carbon sinks show signs of stress and challenge climate targets based on natural CO₂ absorption
The third insight documents a process that threatens one of the central assumptions of international climate agreements: terrestrial carbon sinks, such as forests, soils, and continental vegetation, are showing signs of increasing stress. These systems absorb CO₂ from the atmosphere and function as an essential part of the global climate balance.
Satellite data from ESA tracking carbon storage in Northern Hemisphere ecosystems show a decline in biomass since 2016, which may signal greater carbon release from vegetation to the atmosphere.
The Amazon rainforest has become a net carbon emitter
The Amazon rainforest became a net carbon emitter in 2023 due to water and thermal stress, without an increase in fires beyond the historical average. Boreal forests in Siberia and Canada, which had been consistent sinks for decades, are being reversed by more intense fires associated with warming.
The systemic problem is that national climate commitments, the NDCs submitted by countries to the Paris Agreement, are calculated based on estimates of absorption by natural sinks that may be becoming less reliable.
If the sinks absorb less than the models assume, emission targets need to be more ambitious to achieve the same climate outcome. It’s like a savings fund that yields less than expected: the deposit is the same, but the climate return decreases.
Climate and biodiversity form a feedback loop that makes it ineffective to treat the two crises as separate problems
The fourth insight is one of the most important in the report and also one of the most underestimated in public debate: climate and biodiversity are not two parallel crises.
They are two sides of the same feedback system. Climate warming alters species distribution, phenological synchronies, and disturbance regimes, reducing biodiversity. The loss of biodiversity, in turn, weakens ecosystems that regulate the climate.
This mechanism is increasingly documented. Degraded ecosystems reduce their capacity to act as carbon sinks, alter the water cycle, and become more vulnerable to fires.
Environments more vulnerable to fires release more carbon. More carbon warms the planet more. More warming reduces more biodiversity. The cycle closes, and each turn of the feedback loop increases the difficulty of stabilization.
The political implication is direct. The three Rio Conventions, on Climate Change, Biodiversity, and Desertification, were negotiated separately, have separate secretariats, separate funding, and separate review cycles.
Countries submit climate NDCs and biodiversity NBSAPs as distinct documents, usually developed by different ministries and with little coordination.
The report identifies this fragmentation as a central obstacle: it is impossible to interrupt the feedback between climate and biodiversity with policies that treat the two as independent problems.
Underground aquifers are falling faster in a world with intense rainfall, prolonged drought, and increasing pumping
The fifth insight highlights a problem that many climate analyses still treat as secondary: the depletion of underground aquifers is accelerating globally, and climate is one of the main drivers of this process.
Aquifers provide approximately 50% of all domestic water in the world and more than 40% of global irrigation water, making them an invisible natural infrastructure for cities, agriculture, and food security.
The recharge of these aquifers depends on the infiltration of precipitation through the soil, a process that can take months or years between the falling rain and the water reaching the water table. When the rainfall regime changes, with fewer gentle events and more intense and brief rains, the infiltration rate drops even if the total volume of precipitation remains.
Intense rains run off before infiltrating. Gentle rains infiltrate progressively. Warming also increases evapotranspiration, further reducing the amount of water that reaches aquifers.
The report documents chain consequences: wells drying up, rivers losing base flow when lowered aquifers stop feeding them, land subsidence in cities where pumping compacts sediments, and saltwater intrusion into coastal aquifers when the lowering of the water table allows the sea to advance.
Aquifer depletion directly threatens food security, because it compromises the irrigation that sustains a significant portion of tropical and subtropical agricultural production, precisely in the regions most exposed to climate stress.
Dengue has become a thermometer for global warming and shows how climate is already reshaping public health
The sixth insight uses dengue as one of the most concrete and perceptible indicators of how climate warming is already altering global public health.
In 2024, the World Health Organization reported 14.2 million cases of dengue, the largest global outbreak ever recorded in the historical series. The actual number is likely higher, as the WHO itself recognizes that reported cases represent a significant underestimate due to diagnostic and reporting limitations in many countries.
In 2025, the geographical expansion of dengue to latitudes that previously did not record local transmission confirmed the ongoing change.
Regions of Mediterranean Europe, the southern United States, and high-altitude areas in Latin America became more exposed to the vector. Aedes aegypti is colonizing new territories because warming has made these environments more habitable for more months of the year.
The mechanism is precise. Aedes aegypti has an ideal temperature window for survival, reproduction, and viral transmission. Temperatures below 16°C or above 35°C limit its activity. Warming shifts this window to higher altitudes and latitudes closer to the poles.
At the same time, it shortens the extrinsic incubation period of the virus within the mosquito, causing infected mosquitoes to become transmitters more quickly. Brazil, which already accounts for a large part of global dengue cases, appears as a detailed case study in the report.
Heat stress reduces work productivity and hits tropical countries that contributed least to warming the hardest
The seventh insight directly connects the environmental diagnosis to the global economy. Heat stress caused by climate warming is reducing labor productivity and income on a measurable scale. This economic loss is greatest precisely in the countries that have contributed least to the problem and that most need resources to adapt to it.
The physiological mechanism is well established. When air temperature combined with humidity exceeds the limits that the human body can compensate for through perspiration, cognitive and physical capacity decreases, the risk of heat-related illnesses increases, and outdoor or non-air-conditioned work hours need to be reduced for safety. Agricultural workers, construction workers, artisanal fishermen, and outdoor service workers, important bases of tropical economies, are among the most exposed.
The report quantifies significant losses of work hours and economic output in tropical and subtropical countries throughout the century, with direct impacts on exposed workers and indirect effects on supply chains and international trade.
The irony documented by the authors is structural: the countries most affected by productivity loss caused by warming are, in general, those with the least fiscal capacity to invest in adaptation, such as industrial air conditioning, early warning systems, and health infrastructure.
CO₂ removal, carbon credits, and isolated climate policies do not solve a crisis that functions as an integrated system
The report concludes with insights on solutions, including CO₂ removal from the atmosphere and effective combinations of mitigation policies. The common point is direct: no single technology or policy works in isolation to reverse the set of problems documented by the other insights. Carbon dioxide removal through direct capture, afforestation, or rock alteration has real potential but faces challenges of scale, cost, and verification.
Carbon credit markets, a central financing mechanism for many removal strategies, face systemic integrity challenges.
Studies published in 2024 and 2025 identified that a significant fraction of issued credits does not represent actual CO₂ removal, either because forestry projects did not meet projections, or because they accounted for deforestation reductions compared to hypothetical scenarios that would never materialize independently of the credit.
The insight on effective policy combinations is perhaps the most pragmatic. Accumulated research on emissions reduction shows that no single measure is sufficient.
Carbon pricing, efficiency regulations, subsidies for clean technologies, and information standards interact in ways that can reinforce or contradict each other, depending on the institutional and economic context in which they are applied. The conclusion is that fragmented policies cannot respond to a systemic crisis.
What the ten climate insights show about the failure to treat climate, water, health, biodiversity, and economy as separate problems
What unifies the ten insights is the same conclusion that appears in reports like the Planetary Health Check 2025 and the State of the Climate Report: deteriorating systems—climate, biodiversity, aquifers, public health, and economic productivity—are interconnected in ways that current policies do not yet adequately capture. The crisis is not organized by ministries, sectors, or separate spreadsheets.
Treating each of these themes in isolation may seem administratively simpler, but it is insufficient given the nature of the problem.
Warming affects dengue, dengue strains health systems, heat reduces productivity, loss of productivity diminishes adaptive capacity, falling aquifers compromise irrigation, and degraded ecosystems reduce carbon absorption capacity.
The report does not propose a single solution. It proposes a prerequisite to any solution: recognizing that the problem is systemic. Fragmented responses to a systemic problem are, mathematically, insufficient. The question that remains is whether governments will continue to treat climate, water, biodiversity, health, and economy as separate crises or as parts of the same system in accelerated deterioration.
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