The climate curve most of us recognize is already a remainder.
It is not the full pressure created by the economy. It is the pressure left after forests, soils and oceans have removed part of the carbon from circulation. The same living systems also hold water, cool places, protect coasts, keep soil alive and make many supply chains possible.
That subtraction is enormous, but it is treated as background. It has no invoice, no board seat and no line item in a company's accounts.
So the problem is not only that emissions are too high. The problem is also that the subtractor is living, local and vulnerable. If it weakens, the visible curve gets worse even before the economy has understood what changed.
The curve we need to bend is far steeper than we thought.
Nature's carbon sink — forests, wetlands, mangroves, ocean phytoplankton — absorbs roughly half of our gross CO2 emissions. If that absorption weakens, the net emissions floor rises, the timeline compresses and the required reduction path becomes much more aggressive.
The uncomfortable truth: every year of sink degradation does not just raise emissions. It compresses the time window and steepens the required curve. Restoring nature is not a side project. It is what makes the math possible at all.
Gross emissions data: Global Carbon Project. Sink absorption estimates: IPCC AR6 WG1; Pan et al., Science. Sink erosion trajectory modelled directionally from observed forest degradation trends and SSP4-6.0 baseline assumptions.
The sink is not a metaphor
It is tempting to treat the land and ocean sink as a poetic way to talk about nature helping us. That is too soft. The sink is a physical process. Carbon moves into forests, soils and oceans. The size of that movement changes with heat, drought, land use, fire, ocean chemistry and the health of ecosystems.
When someone shows a chart of net emissions, the sink has already affected the line. The chart is downstream of nature. If land and oceans take up less carbon, the same human activity produces a different atmospheric result. The graph changes before a company changes a single factory, fleet or supply chain.
This is why the hidden subtraction matters. It turns nature from scenery into machinery. You can damage the machinery. You can repair it. You can ask who depends on it and who pays when it weakens.
The balance sheet does not see the subtractor
Companies price labor, fuel, shipping, rent, machines, servers and capital. They do not properly price the natural base that lets those things happen: clean water, stable soils, pollination, shade, drainage, biodiversity, coastline protection and climate stability.
When these systems work, they are invisible. When they fail, the failure enters the economy as flood damage, crop loss, heat stress, supply disruption, insurance withdrawal, stranded assets and public rescue. The cost arrives late and with interest.
Companies need accounts that can see when an asset is quietly drawing down water, soil, cooling or flood protection. They need a plainer way to say four things: this asset depends on a living system; this liability is accumulating; this intervention repairs value; this risk should change the price of capital.
The normal climate story is too narrow
The normal corporate climate story asks a company to measure emissions, reduce emissions and compensate for the remainder. That story is necessary. It is also incomplete.
A company does not only emit into nature. It depends on nature. A beverage company depends on watersheds. A data centre depends on water, power and public tolerance for both. A food company depends on soil, rainfall and pollination. A port depends on coastlines, dredging, rivers and storm patterns. A logistics network depends on heat, roads, drainage and worker health.
Offsets do not solve this dependency problem. A company can buy an offset far away and still face water scarcity at its own plant. It can report lower net emissions and still operate on a floodplain that is losing its buffering capacity. It can claim progress and still carry a hidden liability inside its operations.
Nature Value at Risk starts from that harder question: what happens to business value when the water, soil, heat, biodiversity or landscape around the business changes?
Why this is a balance-sheet problem
A profit and loss statement is good at recording what happened during a period. A balance sheet is supposed to say what a company owns, owes and depends on at a point in time. Nature sits awkwardly between those categories. Companies do not own rainfall. They do not own pollination. They do not own the cooling effect of tree cover or the flood protection of wetlands. Yet their assets often depend on all of them.
That is why the absence matters. A factory can appear productive while drawing down an aquifer. A coastal resort can look valuable while the beach that protects it is eroding. A food company can show strong margins while soil health weakens across its sourcing base. The accounts can look clean because the natural system has not yet sent the bill.
The bill arrives in pieces. It arrives as higher insurance premiums, transport delays, heat stress, unreliable water, lower yields, capex that should have been avoided and public anger that turns into regulation. By then the language has changed. People no longer call it nature. They call it business interruption, input inflation, asset impairment, compliance cost or political risk.
Nature Value at Risk tries to keep the original name visible for longer. It asks the company to see the living system before it reappears as business risk.
The measurement has to change decisions
There is a weak version of this work that ends with a dashboard. A company measures biodiversity, publishes a report and moves on. That may create awareness, but awareness is not the same as allocation.
The stronger version changes decisions. A lender changes terms because an asset depends on a weakening watershed. A procurement team changes suppliers because one region carries more water or heat risk. A board funds restoration because the alternative is a larger future liability. An investor prices a company differently because its earnings depend on ecological systems that competitors have ignored.
This is the difference between disclosure and infrastructure. Disclosure tells the world what a company has seen. Infrastructure changes what the company can do next.
The private ratio is the tell
The public conversation often asks where government money will come from. We need that question. But it can also become an excuse to wait.
Private activity creates much of the pressure, and private balance sheets will have to finance a large share of the repair. That is why the private ratio matters more than the blended global number.
The private ratio has moved the wrong way: roughly 120:1, then 143:1, and now about 209:1. Recent State of Finance for Nature estimates put private nature-negative finance at about US$4.9 trillion, while private finance for nature-based solutions is about US$23.4 billion.
At 209:1, the funding gap is a pricing failure.
That number should bother anyone who works with capital. It means the market is not neutral. It allocates far more private money to activities that degrade nature than to activities that protect or restore it. The issue is not a lack of concern. Concern does not change underwriting, procurement, credit spreads or capital budgets. A business language for nature can.
The usual answer is to ask for more public funding. We need that. But public money alone cannot turn a 209:1 private ratio. The point is not to replace public responsibility with private capital. The point is to make private capital stop pretending the natural base is free.
If a company depends on water, soil, cooling, pollination, storm protection or biodiversity, that dependency should affect capital allocation. If a company damages those systems, that impact should affect price, cost of capital, insurance and license to operate. If a company repairs those systems, that work should be visible as more than goodwill.
Urvara's bet
Urvara exists because I do not think philanthropy, compliance or offsets can carry this work alone. They all matter. They are not enough.
The bet is that capital can be made to notice nature before the bill arrives. The Nature Impact Index is an early artifact: a way to make impact and dependency visible. Nature Value at Risk is the next layer: a way to connect ecological change to business value.
If business can name nature value, balance sheets can fund repair. If balance sheets fund repair, markets can price the difference. If markets price the difference, restoration can become infrastructure.
This is the work I want to do for a long time. It needs people who can move between ecology and finance, between field evidence and boardroom decisions, between public systems and private balance sheets. If the hidden subtraction bothers you too, write to me.
Sources & further reading
- Global Carbon Budget 2024 for land and ocean sink context.
- UNEP State of Finance for Nature for private nature-negative and nature-based-solution finance estimates.
- Nature on Balance Sheets for the Urvara homepage thesis.