Is sustainable development necessary?

The Earth’s resources are not unlimited. If we use them in a more judicious and equitable manner, our children and grandchildren can have the benefit of them too. We need to change our habits and improve our ways of doing things so as not to exhaust the wealth we have today but rather ensure its quality for those who will come after. These changes cannot be accomplished without modifying how we manage our economic and social affairs. With this new way of thinking and realizing development, we are in a period of radical change, and at a planetary scale.