摘要:The paper argues for the necessity of maintaining the interest for the future of the planet in a context of crisis, when priorities tend to change. The main issue is eco-efficiency and its importance for the sustainable development of humanity. First, it is explained how ecology and economic efficiency can interfere and then the paper makes a literature review emphasizing the definition and the principles that the concept of eco-efficiency is based on. It also stresses some weak points of the concept, the importance of its integration into a larger sphere of interest and the fact that sustainable approach of the economy may prevent future crisis.