The protection of the natural environment has become a new and integral aspect of the development issue. When we pay proper attention to its ecological dimension, the struggle against hunger appears even more complex, and calls for the establishment of new bonds of solidarity. Concern for ecology, seen in connection with the process of development and in particular the requirements of production, demands first of all that in every economic enterprise there be a rational and calculated use of resources. It has become increasingly evident that an indiscriminate use of available natural goods, with harm to the primary sources of energy and resources and to the natural environment in general , entails a serious moral responsibility. Not only the present generation but also future generations are affected by such actions.
Economic activity carries with it the obligation to use the goods of nature reasonably.
But it also involves the grave moral obligation both to repair damage already inflicted on nature and to prevent any negative effects which may later arise. A more careful control of possible consequences on the natural environment is required in the wake of industrialization, especially in regard to toxic residue, and in those areas marked by an excessive use of chemicals in agriculture. The relationship between problems of development and ecology also demands that economic activity project and accept the expenses entailed by environmental protection measures demanded by the community, be it local or global, in which that activity takes place. Such expenses must not be accounted as an incidental surcharge, but rather as an essential element of the actual cost of economic activity. The result will be a more limited profit than was possible in the past, as well as the acknowledgment of new costs deriving from environmental protection.