The Climate Change Mistake

What the 2026 Iran War Made Us See

Climate action means renewable energy. Solar, wind, EVs, hydrogen — for thirty years the world has poured enormous investment in that direction.

But in the Hormuz crisis of 2026, the first shortage to surface in Japan was not the price of gasoline. *Food packaging ran short, stocks of medical plastics tightened, supplies of agricultural film stopped* — it was not energy that halted, but materials. Chemical fertilizer tightened next, because its raw materials sit on the far side of the Strait of Hormuz.

Thirty years of climate policy overlooked two fundamental questions.

Issue 1 — Once energy is renewable, what about materials? What about food?

Solar can make electricity, but it cannot make the plastic that wraps food. Wind can turn a factory, but it cannot produce the raw material of chemical fertilizer. An EV can drive, but it cannot manufacture the membrane of a dialysis machine.

Naphtha, made from oil, carries the material foundation of modern civilization — dialysis membranes, the absorbent in diapers, food packaging, medical devices, agricultural film, synthetic fibers, building materials, car parts, the housings of electronics. None of these "burn" oil. They "convert" oil into material. *This is not a problem that disappears once CO2 is no longer emitted. Even unburned, oil is needed as material.*

And in an irony, renewable-energy hardware itself depends on petrochemicals. The EVA film and backsheet of a solar panel, the glass-fiber-reinforced plastic blades of a wind turbine, the battery components and lightweight plastics of an EV, the electrolyzer membrane and carbon-fiber tank of hydrogen — *none can be made without petrochemicals.* Renewables are not a replacement for oil; they are an extra layer resting on top of it.

Food has the same structure. Synthetic fertilizer made from natural gas (the Haber-Bosch process) supports roughly half of the world's food production. Renewable energy cannot replace synthetic fertilizer. The raw material of the sulfuric acid that makes phosphate fertilizer is sulfur, recovered as a by-product of oil refining. *If the refineries stop, no amount of fusion power will make fertilizer.*

Issue 2 — "Cutting CO2 emissions" took center stage, and restoring ecosystems was left in the shade

Today's climate policy is condensed into "cutting CO2 emissions." Renewables, EVs, carbon pricing, industrial CCS — trillions of dollars of capital investment are aimed there. Meanwhile the restoration of the largest carbon sink, soil and ecosystems, was long left in a policy blind spot.

Figures below without a stated source come from the two documents listed at the end of this article.

Soil carbon was the "blind spot" of policy

Through 12,000 years of farmland expansion and the conversion of forest and grassland, an estimated about 133 billion tonnes of carbon was lost from the top two meters of the soil (Sanderman et al. 2017, PNAS) — roughly eighty years of present-day U.S. greenhouse-gas emissions (this essay's calculation). Through land-cover change, about 1.9 Pg (about 7 Pg CO2-equivalent) of soil organic carbon is still lost every year (estimate for 2001–2020, Remote Sensing of Environment).

Even so, early climate policy slighted soil carbon for a long time. The greatest barrier was the *MRV (measurement, reporting, verification) wall* under the Kyoto Protocol. Above-ground biomass can be measured from satellite images, but measuring the change in soil carbon stocks across vast farmland and forest to a statistically defensible precision was extremely hard in both cost and technique. As of 2006, among the EU-15, only six countries — Belgium, Finland, Italy, Luxembourg, Portugal, and Sweden — could report a non-zero valid figure for soil carbon change in the "forest remaining forest" category.

As a result, the "not-source principle" operated inside the Kyoto Protocol — a rule that a carbon pool could be excluded from accounting when it could not be shown, to a "practicable" precision, not to be a source of emissions. Many countries leaned heavily on the *assumption that soil carbon change was "zero."* This became *the decisive factor that kept the potential mitigation effect of soil carbon storage off the policy agenda for a long time.*

The LULUCF rules turned the role of plants into an "accounting trick"

The rules for land use, land-use change, and forestry (LULUCF) were an institutional design that favored countries with vast forest resources. Climate Action Network denounced the setting of certain reference levels as a "logging loophole" that tolerated up to 451 million tonnes of additional emissions a year (memo to ministers, December 2010). A provision that let natural disturbances (wildfire, drought, pest damage) be excluded from accounting as "force majeure" lowered accountability further.

The decisive error was the Searchinger error of 2009. Under the EU ETS and the Kyoto rules, CO2 emissions from burning biomass were treated as "zero" (carbon-neutral) on the premise that plants absorb the same amount as they grow. But what Searchinger and colleagues at Princeton demonstrated in Science was that *the enormous carbon emissions from forest destruction to procure biofuel feedstock were being completely ignored in the accounting.*

In the early international frameworks, the role of plants was used less as a genuine mechanism of climate mitigation than as *a tool in each country's political negotiation and a buffer for meeting targets.*

After 2015: the two poles of reappraisal and hype

Long in the blind spot, soil carbon came into the light with the Paris Agreement (COP21) of 2015. The turning point was the *"4 per 1000" initiative* led by the French government: increase the world's soil organic carbon stock by 0.4% (4 per 1,000) every year, and the increase in anthropogenic CO2 emissions could be offset.

In 2019, a paper from ETH Zurich's Crowther Lab in Science concluded that *"there is room on Earth for a trillion new trees, which could absorb about 205 billion tonnes, two-thirds of humanity's emissions since the industrial revolution."* It triggered the founding of the World Economic Forum's 1T.org, but was immediately exposed to strong rebuttal and scientific scrutiny. In 2020, Crowther and colleagues published a correction in Science, lowering the estimate of the carbon uptake of new forest to about half the initial figure.

Scientific limits — no overconfidence

Front-line soil scientists rejected the 4-per-1000 target and the "tree-planting hype" on four constraints.

By the estimate of Fargione et al. (2018), cited by WRI (2020), cover crops on 217 million acres of U.S. cropland would offset only 1.6% of U.S. net emissions. Actual adoption was 15.3 million acres in the 2017 Census of Agriculture — below 4% of cropland.

IPCC SRCCL — rebuilt as "an indispensable part"

The IPCC's Special Report on Climate Change and Land (SRCCL) of 2019 sorted out the excess expectation and the pessimism. If every country's NDC were fully implemented, the land sector would turn into a net sink of up to 1.1 GtCO2e per year by 2030 (Grassi et al. 2017) — a realistic, modest figure, a world apart from the hype of "offsetting all the CO2 in the atmosphere" — and on that footing it went on to officially establish soil's standing as *"an indispensable and important part"* of climate mitigation.

Griscom and colleagues' 2017 PNAS paper (Natural Climate Solutions) showed that the fullest use of protecting, managing, and restoring forest, wetland, grassland, and farmland could deliver *more than one-third (about 37%, up to 23.8 GtCO2-equivalent per year)* of the emission reductions needed by 2030. Even so, efforts aimed at terrestrial carbon sequestration receive only 2.5% of the world's climate-mitigation finance.

Japan's unusual soil resource — Andosols and biochar

Japan's distinctive volcanic-ash soils (kuroboku, Andosols) have a carbon-retention capacity high by world standards. In a survey of fields at Toya in Hokkaido, the soil organic carbon stock in the top 15 cm alone reached about 40 Mg C/ha (2012, 34 fields, Hokkaido University). Because aluminum and iron form strong complexes with humus, the carbon resists microbial decomposition and suits long-term storage.

The Strategy for Sustainable Food Systems (MeaDRI), set in 2021, targets by 2050 a 50% cut in chemical pesticides, a 30% cut in chemical fertilizer, organic farming on 25% (one million ha) of farmland, and elite trees for over 90% of forestry seedlings. The J-Credit scheme added and revised a methodology for soil carbon storage through the application of biochar to farmland. Biochar is a porous char stabilized by pyrolysis; it sidesteps the "saturation limit" and "impermanence" that ordinary soil organic carbon carries, and *keeps carbon fixed for hundreds to thousands of years.*

For thirty years, the order was backwards

Why did it stay backwards? The destinations of the money share one feature — every one of them is a measure you buy. Panels, turbines, EVs, CCS plants. You buy the equipment, renew it, keep buying — a countermeasure that is at the same time a permanent purchase. The side the money did not go to — restoring soil and ecosystems — is *a measure you can take on your own land*, with almost nothing to keep buying. A measure that can be sold has people pushing it. For a measure that cannot be sold, no force worked to overcome technical difficulties like the measurement wall (MRV), and the wall stayed on as the reason for exclusion. The 97.5-to-2.5 allocation is not a ratio of effectiveness. It is a ratio of saleability.

Soil carbon is no "magic wand" — bound by stoichiometric constraints and saturation limits, it cannot by itself offset humanity's emissions. But it is an indispensable part of climate mitigation, and it carries at the same time an overall value as "adaptation": biodiversity, water retention, human health (lower NCD risk), and stronger resilience of farm systems against extreme weather. Still the allocation of finance leans overwhelmingly toward industrial solutions — that is the inversion of order that lasted thirty years.