Green Theory

In the 1960s there was public recognition of the global environmental crisis arising from the ‘tragedy of the commons’, which is the idea that as self-interested individuals, humans will overuse shared resources such as land, fresh water and fish. In the 1970s the first United Nations conference on the subject was held and by the 1980s green political parties and public policies had emerged. This coincided with a demand for a green theory to help explain and understand these political issues. By the 1990s International Relations came to recognise the natural environment as an increasingly significant source of questions for the discipline, requiring theoretical as well as practical attention – especially in the wake of mounting evidence that human actions were significantly changing our global climate and presenting security problems as well as ecological ones.