Abstract: In rich countries, environmental problems are seen as problems of prosperity. In poor countries, they are seen as problems of poverty. This is because the environmental problems in poor countries—such as lack of clean drinking water or decent sanitation—are problems that affect them here and now, whereas in rich countries the environmental problems that people worry about most—largely as a result of current prosperity and economic growth—are those that seem likely to harm mainly posterity and hence violate our obligations to future generations.But what exactly are our obligations to future generations? Are they determined by some sort of ethical system, such as the ‘rights’ of future generations, or justice between generations, or intergenerational equity, or sustainable development? The first part of this book is addressed to these questions. It is argued that while ethical ‘systems’ do not provide much help, we still have moral obligations to take account of the interests that future generations will have. But an appraisal of these interests in the light of probable future developments suggests that, while environmental problems have to be taken seriously, our main obligation to future generations is to bequeath to them a more decent society in which there is greater respect for basic human rights than is the case today throughout most of the world.Furthermore, it cannot serve the interests of justice if the burden of protecting the environment for the benefit of posterity is born mainly by poorer people today. More resources devoted to the environment means fewer are devoted competing claims for, say, health care or education or housing, not to mention plain private consumption. And in poor countries millions of people suffer from acute lack of sanitation, clean drinking water, shelter, and basic infrastructures to prevent or cure widespread disease. Neither generations nor nations are homogeneous entities. The later chapters of this book, therefore, are addressed to the ethical aspects of the way that resources ought to be shared out between environmental protection and competing uses in all countries, and how the burden of dealing with global environmental problems ought to be shared out between rich and poor nations.

Keywords: environment, environmental values, equity, future generations, human rights, justice, poverty, prosperity, resources, sustainable development