by Roberto Bissio
Twenty years ago, the concept of “sustainable development” was adopted at the highest level in Rio de Janeiro to simultaneously aim at preserving the planet for future generations and promoting a sound development to meet the needs of the present ones. Twenty years after, the volume of international trade has multiplied by five and the per capita world income has doubled to around ten thousand dollars a year. And yet sustainable development is far from being achieved. Increased resources has not accelerated poverty reduction and instead social inequality is on the rise in most countries, North and South, while the unsustainable production and consumption patterns have already overstepped several “planetary boundaries.”