Since the Industrial Revolution, as the world became excessively dependant on fossil fuels for energy, emissions of greenhouse gases (GHGs) have increased dramatically. The concentration of Carbon dioxide in the atmosphere, for instance, has gone up by 31 per cent since 1750. These gases trap heat, thus leading to ‘global warming’. In the 20th century, the earth’s temperature increased by about 0.6^oC due to increasing concentration of GHGs in the atmosphere. It is expected to increase by another 1.4-5.8^oC by the end of the 21st century. Rising temperatures cause a series of reactions like rise in sea level, causing inundation and increasing salinity in coastal areas, change in weather patterns that affect agricultural productivity, and floods creating favourable conditions for the spread of disease carrying vectors leading to epidemics.

Industrialised countries set out on the path of development much earlier than developing countries, and have been emitting GHGs in the atmosphere for years without any restrictions. Since GHG emissions accumulate in the atmosphere for decades and centuries, the industrialised countries’ emissions are still present in the earth’s atmosphere. Therefore, the North is responsible for the problem of global warming given their huge historical emissions. It owes its current prosperity to decades of overuse of the common atmospheric space and its limited capacity to absorb GHGs.

Developing countries, on the other hand, have taken the road to growth and development very recently. In countries like India, emissions have started growing but their per capita emissions are still significantly lower than that of industrialised countries. The difference in emissions between industrialised and developing countries is even starker when per capita emissions are taken into account. In 1996, for instance, the emission of 1 US citizen equalled that of 19 Indians.

Ironically, even though developing countries’ contribution to global warming is minimal, they stand to face most of its adverse effects. They are twice as vulnerable to climate change as compared to industrialised countries. For instance, while agriculture in developing countries will be negatively affected, a few industrialised countries will actually benefit from increase in crop productivity as climate changes. Moreover, developing countries have limited resources to cope with and adapt to changes that global warming will bring in its wake.

Rich countries’ per capita GHG emissions are much higher due to their higher usage of fossil fuels needed for an energy-intensive lifestyle. Per capita emissions of developing countries are lower because a large portion of the population does not even have access to basic amenities like electricity. They need to increase their emissions and utilise their share of the common ecological space. To do it in a manner that keeps the concentration of GHGs in the atmosphere at a tolerable level, it is necessary that richer countries decrease their per capita emissions.