Sustainable development is development that satisfies the needs of the present generation without destroying the capacity of future generations to satisfy their own. The formulation comes from the World Commission on Environment and Development, chaired by Gro Harlem Brundtland, whose report Our Common Future (1987) made the phrase a global commonplace. Its conceptual core is intergenerational equity — the claim that those not yet born hold a legitimate claim on the resource base, and that a generation which consumes its natural capital is transferring costs to people who cannot consent.
Two features of the formulation are easily missed. It is built on needs, not wants, and so contains a distributive argument: meeting the essential needs of the world's poor comes first. And it joins intragenerational equity to the intergenerational claim, since the report treated poverty and ecological degradation as mutually reinforcing. Sustainability, properly read, is a statement about justice rather than resource accounting.
The three pillars and the goals framework
Conventional treatments rest sustainability on three interdependent pillars — economic viability, social equity and ecological integrity — sometimes rendered as profit, people and planet. The weak sustainability position holds that natural capital may be depleted if enough physical or human capital is created in exchange; the strong sustainability position denies this, since climate stability, groundwater and biodiversity have no manufactured substitute. Sociology's contribution is to ask what the model leaves implicit — whose economy, whose society and whose environment. Amartya Sen reframes the problem as freedom rather than needs: what must be sustained is the capability of future people to live lives they value.
From goals to indicators
The idea was institutionalised through the Rio Earth Summit of 1992, Agenda 21, the Millennium Development Goals and, since 2015, the Sustainable Development Goals — seventeen goals with associated targets, adopted as the 2030 Agenda and monitored in India through national and state SDG indices. Their advance is that they apply to rich and poor countries alike and treat climate, inequality and gender as development questions. Their sociological weakness is indicator-driven governance: what is measurable is prioritised, political conflicts are recast as technical shortfalls, and progress can be reported without redistributing power.
Growth versus environment
The central dispute is whether environmental protection constrains growth. Optimists invoke the environmental Kuznets curve — pollution rising with income, then falling as societies grow rich enough to clean up — and point to ecological modernisation. Critics reply that the curve reflects the export of dirty production to poorer countries, and that carbon emissions show no such turning point. India insists in the global version of this argument on common but differentiated responsibilities: historical emissions are largely Northern, per-capita Indian emissions low, and the right to develop cannot be foreclosed in the name of a crisis others created.
Displacement and project-affected people
The sharpest Indian expression of unsustainability is development-induced displacement by dams, mines, highways, power plants, industrial corridors and protected areas. Those displaced since independence number many millions, with Adivasi and Dalit communities grossly over-represented because the resources sought — forests, minerals, river valleys — lie where they live. The key concepts are involuntary resettlement, cash compensation against loss of livelihood, and erosion of common property resources that never appear in a compensation schedule. Because compensation follows title, tenants, sharecroppers, forest-dependent households, artisans and women are undercounted. Recognition has advanced through the Forest Rights Act (2006), with its provision for gram sabha consent, and the Right to Fair Compensation and Transparency in Land Acquisition, Rehabilitation and Resettlement Act (2013), which introduced social impact assessment and resettlement entitlements — yet implementation, and the routine invocation of public purpose, remain contested.
Indian environmental movements
India's environmental movements are, in Ramachandra Guha's reading of Chipko (from 1973 in the Garhwal Himalaya), not middle-class conservationism but peasant struggles over subsistence rights — villagers, prominently women, protecting forests they depended on against commercial felling. The Narmada Bachao Andolan, mobilising against the Sardar Sarovar and other dams from the mid-1980s, fused displacement, rehabilitation and the rationality of large-dam planning into a single national argument. Amita Baviskar's study of the Narmada valley complicates the heroic account, showing that Bhil villagers' understandings of land and loss did not simply coincide with the movement's environmentalist framing. Madhav Gadgil and Ramachandra Guha capture the structure at work with their distinction between omnivores, who draw resources from the whole country, and ecosystem people dependent on their immediate locality, with ecological refugees produced in between. Appiko, Silent Valley and anti-mining mobilisation in Odisha and Jharkhand are likewise better read as struggles over resource access than as conservation campaigns.
Environmental justice and the depoliticisation critique
Environmental justice names the pattern by which ecological harms — polluted air and water, hazardous work, toxic dumping, displacement — fall on the poor, the low-caste and the tribal while benefits accrue elsewhere. Guha and Juan Martinez-Alier's environmentalism of the poor insists such conflicts are distributional, fought over livelihood rather than wilderness. From this standpoint the critical charge against sustainability discourse is that it can depoliticise inequality: by speaking of humanity, future generations and planetary limits in the abstract, it obscures who consumes, who is displaced and who decides, converting political conflict into managerial vocabulary — audits, offsets and certification that leave the structure of appropriation intact.
For the UPSC answer
Lead with Brundtland, but score the extra mark by noting that the definition joins intragenerational to intergenerational equity, and add the weak-versus-strong distinction. Ground the answer in India: displacement and the undercounting of the untitled, the Forest Rights Act and the 2013 land acquisition law, and Chipko and Narmada read through Guha and Baviskar. Gadgil and Guha's omnivores and ecosystem people is the most useful analytical device here. Finish critically — sustainability without a politics of distribution becomes business as usual with better reporting.
References & further reading
- World Commission on Environment and Development (1987). Our Common Future. Oxford University Press.
- Guha, R. (1989). The Unquiet Woods: Ecological Change and Peasant Resistance in the Himalaya. Oxford University Press.
- Gadgil, M. and Guha, R. (1995). Ecology and Equity: The Use and Abuse of Nature in Contemporary India. Routledge.
- Baviskar, A. (1995). In the Belly of the River: Tribal Conflicts over Development in the Narmada Valley. Oxford University Press.
- Guha, R. and Martinez-Alier, J. (1997). Varieties of Environmentalism: Essays North and South. Earthscan.
- United Nations (2015). Transforming Our World: The 2030 Agenda for Sustainable Development. New York: United Nations.