What is sustainable development?
Sustainable development means growth that meets our needs today without spoiling the chance of future people to meet theirs. The idea became famous through a 1987 world report called Our Common Future.
- Three pillars: economy (jobs, income), society (health, fairness) and environment (clean air, water, forests). Law tries to keep all three in balance.
- Why law is needed: a factory saves money by dumping waste, but the whole town pays with poor health. Law makes the polluter carry that cost.
Key principles used by courts
- Polluter pays: whoever causes pollution pays to clean it up and to compensate victims.
- Precautionary principle: if an activity may cause serious harm, act to prevent it even before science is fully certain.
- Intergenerational equity: today's people hold nature in trust for future generations.
- Public trust: rivers, forests and the sea belong to everyone; the government is only their guardian.
International initiatives
Pollution crosses borders, so countries must work together.
- Stockholm Conference, 1972: the first big UN meeting on the human environment. It led to the UN Environment Programme (UNEP). 5 June became World Environment Day.
- Montreal Protocol, 1987: countries agreed to phase out chemicals that harm the ozone layer. It is often called the most successful environment treaty.
- Rio Earth Summit, 1992: gave the Rio Declaration, Agenda 21, and treaties on climate change (UNFCCC) and biodiversity.
- Kyoto Protocol, 1997: rich industrial countries promised to cut greenhouse gases by set amounts.
- Paris Agreement, 2015: nearly every country set its own climate targets to keep warming well below 2 °C, aiming for 1.5 °C.
- Sustainable Development Goals, 2015: 17 goals for 2030, such as clean water (Goal 6), climate action (Goal 13) and life on land (Goal 15).
A key idea in climate talks is common but differentiated responsibilities: all countries must act, but those who polluted more in the past should do more.
Constitutional provisions
Many constitutions now protect the environment, some as a right of the people and some as a duty of the State. India is a clear example.
- Article 21 (right to life): the Supreme Court has said that life means a life with dignity, which includes clean air, safe water and a healthy environment. People can go to court if this right is harmed.
- Article 48A (Directive Principle): the State shall try to protect and improve the environment and protect forests and wildlife. Added in 1976.
- Article 51A(g) (Fundamental Duty): every citizen should protect and improve forests, lakes, rivers and wildlife, and show compassion to living creatures.
- Articles 32 and 226: let people take environment cases straight to the Supreme Court or a High Court, often as public interest litigation (PIL).
Courts have used these articles to order cleaner fuel for city buses, to shift polluting industries and to protect rivers.
Environment Protection Act 1986
After the Bhopal gas leak of December 1984, which killed thousands of people, India passed the Environment (Protection) Act, 1986. It is an umbrella law: it covers air, water and land together and fills gaps left by older laws such as the Water Act 1974 and the Air Act 1981.
- Environment includes water, air, land and how they relate to humans, other living things and property.
- The central government can set standards for emissions and discharges, decide where industries may be placed, and make rules on hazardous substances.
- It can give directions to close, stop or regulate any industry, or to stop its electricity and water supply.
- Officers can enter and inspect sites and take samples.
- Breaking the Act leads to penalties; the rules for fines and punishment have been revised over time.
- Rules made under it include Environmental Impact Assessment (EIA): big projects must study their effect on nature before they are approved.
Other countries have similar umbrella laws, such as national environmental protection acts that set limits and create a regulator.
Pollution control boards
Laws need someone to apply them every day. In India this is done by the Central Pollution Control Board (CPCB) and the State Pollution Control Boards (SPCBs), first set up under the Water Act 1974.
- CPCB: advises the central government, sets national standards, runs the air quality index, coordinates the state boards and trains staff.
- SPCBs: give consent to establish and consent to operate to factories, inspect them, test samples, and send notices or closure orders.
- Industries are grouped by how much they pollute (for example red, orange, green and white categories), so the dirtiest get the closest checks.
Green courts
India's National Green Tribunal (2010) hears environment cases quickly and can order compensation. Many countries have similar environment courts or agencies.
Key formulas and definitions
- Sustainable development = needs of today met + needs of the future protected
- Three pillars: economy + society + environment (all balanced)
- Polluter pays: cost of clean-up + compensation → paid by the polluter
- Precautionary principle: serious risk + uncertain science → prevent first
- India: Art. 21 (right) · Art. 48A (State duty) · Art. 51A(g) (citizen duty)
- EPA 1986 = umbrella law over air, water and land
- Boards: consent to establish → consent to operate → inspect → notice → closure
Worked examples
1. A town's lake is being filled with waste by a hotel. Which constitutional articles can citizens rely on?
They can go to the High Court under Article 226 (or the Supreme Court under Article 32) claiming their right to life under Article 21 includes a clean environment. They can point out the State's duty under Article 48A. Citizens themselves have a duty under Article 51A(g) to protect lakes.
2. A chemical plant releases waste water at 80 units when the limit is 50. Step by step, what can the state pollution control board do?
1) Inspect and take samples. 2) Issue a notice asking the plant to fix it within a set time. 3) If it does not, refuse to renew its consent to operate. 4) Order closure or the cutting of power and water. 5) Under polluter pays, the plant can be made to pay for clean-up.
3. Why is the Paris Agreement called 'bottom-up' while the Kyoto Protocol was 'top-down'?
Under Kyoto, fixed cuts were set for rich countries from above. Under Paris, every country decides its own target (its nationally determined contribution) and reports progress, so targets come from each country upwards. This got almost all countries to join.
Common mistakes
- Thinking Article 21 mentions the environment directly. It does not; courts read a healthy environment into the right to life.
- Mixing up 48A and 51A(g). 48A is a duty of the State; 51A(g) is a duty of every citizen.
- Calling the Environment Protection Act 1986 a law only about air. It is an umbrella law for air, water and land.
- Thinking pollution control boards are courts. They are regulators: they give consent, inspect and order action; courts and tribunals decide disputes.