Abhijit Vinayak Banerjee’s call for climate justice in Kolkata places a familiar urban reality inside a larger global imbalance: the communities facing the harshest consequences of climate change are often not the communities that contributed most to global warming. His address also raises a practical question for cities: how should adaptation, heat protection and climate damage be financed when responsibility and vulnerability are distributed so unevenly?
The Nobel laureate, who is the Ford Foundation International Professor of Economics at the Massachusetts Institute of Technology, made the argument at a programme at Tollygunge Club titled “Just Economics: A Better Deal for People and Planet”. Speaking in Calcutta on Friday, Banerjee said countries least responsible for global warming often face some of its most severe consequences. He called for a more equitable international response to climate change and outlined what he described as a “climate grand bargain”.
The address was not a city policy announcement, nor did it establish a new funding mechanism. Its importance lies in the way it connects international climate negotiations to the everyday urban systems that determine whether residents can withstand heat, flooding and other climate pressures. The supplied report does not provide a Kolkata-specific heat, mortality or emissions dataset. It does, however, present a framework for examining why climate resilience cannot be separated from questions of income, public finance and historical responsibility.
The distribution of emissions is central to Banerjee’s argument. Figures cited during the address put the wealthiest 10 per cent of the global population at 48 per cent of consumption-based emissions, while the bottom 50 per cent account for 11.5 per cent. These figures describe a stark asymmetry between consumption and exposure. They do not, by themselves, show how the burden is distributed within any particular city, but they establish the wider inequality that climate finance is expected to address.
For urban residents, the distinction matters because climate risk is experienced through physical infrastructure and access to basic services. Heat becomes more dangerous where homes provide inadequate protection, work takes place outdoors and access to cooling is limited. Flooding becomes more damaging where drainage, housing security and emergency support are weak. The supplied material does not attribute specific examples of these conditions to Kolkata, but Banerjee’s argument is directed at the communities whose economic position limits their ability to absorb climate shocks.
This is also why climate justice is more than a question of diplomatic language. A city’s capacity to adapt depends on who controls funds, which institutions are responsible for spending them and whether assistance arrives as grants or debt. Banerjee said support to developing countries has been slow and is frequently provided through loans, including to nations already burdened by debt. That financing pattern can shift the cost of adaptation onto governments that have limited fiscal room and may already be managing competing public needs.
The distinction between loans and compensation is especially important in the proposal he outlined. Under the “climate grand bargain”, wealthy countries would compensate lower-income nations for present and future damage arising from their current emissions. Participating developing countries, in return, would introduce carbon pricing. The proposal therefore combines a responsibility-based transfer with a domestic incentive to reduce emissions.
The address cited estimates that climate damage to low- and middle-income countries from emissions by Organisation for Economic Co-operation and Development nations is around $1.8 trillion, including approximately $1 trillion for Africa. These estimates were presented during the talk, and the supplied report does not provide their methodology or identify the underlying study. They should therefore be read as figures used to support the argument rather than as independently examined findings within the report.
Even with that limitation, the numbers clarify the scale of the institutional problem. If climate damage is counted only as a future environmental concern, the public finance challenge remains hidden. If it is treated as an economic loss affecting countries and communities with lower responsibility for emissions, the question becomes one of compensation, redistribution and the design of adaptation funding.
For cities, international finance eventually becomes a local administrative question. Funds must be converted into measures that protect residents, maintain infrastructure and preserve the ecological systems that moderate climate risk. The report does not specify which Indian institutions would receive or administer the proposed compensation, how funds would be allocated between national, state and municipal governments, or how carbon pricing would operate. Those unanswered questions are not minor technicalities. They determine whether a climate agreement produces visible protection or remains a high-level commitment.
The setting of Banerjee’s address added a distinctly urban layer to the discussion. Tollygunge Club chief executive and managing member Brig V Ganapathy, referring to the club’s location in the metropolis, said its green space carried a responsibility extending beyond members to the city and future generations. The club’s statement described it as the custodian of a “precious space” and connected that responsibility to the importance of every green lung in Kolkata.
That intervention points to a second dimension of climate justice: access to urban ecological assets. Green spaces are not only private or institutional amenities. They form part of the environmental systems through which cities experience heat, rainfall and air quality. The supplied material does not quantify Tollygunge Club’s ecological contribution or compare it with other open spaces in Kolkata. It does show how the language of stewardship is being applied to a privately managed green space situated within a densely populated metropolis.
The question is therefore not simply whether cities need more climate finance. It is also who benefits from the land, shade, water management and ecological protection that climate finance supports. A financing system that funds projects without examining access could improve infrastructure while leaving the most vulnerable residents exposed. Banerjee’s emphasis on fairness places distribution alongside emissions reduction and adaptation as a central policy concern.
His proposal also attempts to address the political difficulty of international climate negotiations. Banerjee said existing negotiations and financing arrangements have limitations, while presenting reciprocal commitments as a possible way forward. Wealthy countries would accept greater responsibility for damage associated with their emissions, while developing countries participating in the arrangement would create carbon-pricing systems.
The reciprocal structure is significant because it recognises that climate agreements must operate across different levels of responsibility and capacity. It also makes clear that justice, in this formulation, is not presented as an alternative to emissions reduction. Compensation for damage, support for adaptation and incentives to reduce future emissions are intended to function together.
The evidence in the supplied report does not establish whether governments have accepted this proposal, how it would be negotiated or whether a comparable mechanism is under active implementation. Nor does it establish the impact that any future carbon-pricing system would have on households, industry or transport. Those issues require separate policy and economic examination. What the address does provide is a framework for asking whether climate action can be effective if its financing arrangements deepen the debt pressures of vulnerable countries.
Kolkata’s relevance in this conversation is both geographical and institutional. The speech took place in the city, and the discussion of a green space within the metropolis brought global climate responsibility into a local setting. Yet the report offers no new municipal announcement, project timeline or official adaptation plan. The city-specific lesson must therefore remain limited: local green assets and the ability of vulnerable residents to cope with climate stress are connected to wider choices about land, public responsibility and finance.
The larger urban question is whether climate resilience will be treated as a technical programme or as a distributional compact. The first approach focuses on projects and expenditure. The second asks who created the risk, who receives protection, who bears the cost and which institutions are accountable for delivery. Banerjee’s address clearly advocates the latter approach, linking climate action to historical emissions, development finance and the treatment of vulnerable communities.
What the available evidence confirms is that climate justice is being framed as both an ethical and an economic issue. The figures cited on emissions and climate damage support the case for a more equitable international arrangement, while the discussion of loans highlights the financial constraints facing developing countries. What remains unestablished is how such a bargain would be governed, funded and implemented, and how its benefits would reach residents at city level.
Those are the questions that will determine whether climate justice moves beyond speeches. For Kolkata and other cities, the next stage is not only to track international commitments, but also to examine how climate finance, green-space stewardship and adaptation responsibility are translated into accountable urban action.
