G. Faure – författare

Since the end of World War II isotope geology has grown into a diversi­ fied and complex discipline in the earth sciences. It has progressed by the efforts of a relatively small number of specialists, many of whom are physi­ cists, chemists, or mathematicians who were attracted to the earth sciences by the opportunity to measure and to interpret the isotopic compositions of certain chemical elements in geological materials. The phenomenal growth of isotope geology during the last 25 years is an impressive indi­ cation of the success of their efforts. We have now entered into a new phase of development of isotope geology which emphasizes the application of the new tools to the solution of specific problems in the earth and planetary sciences. This requires the active participation of a new breed of geologists who understand the nature and complexity of geological problems and can work toward their solution by a thoughtful application of the principles of isotope geology. It is there­ fore necessary to explain these principles to earth scientists at large to enable them to make use of the new information which isotope geology can offer them.

Since the end of World War II isotope geology has grown into a diversi­ fied and complex discipline in the earth sciences. It has progressed by the efforts of a relatively small number of specialists, many of whom are physi­ cists, chemists, or mathematicians who were attracted to the earth sciences by the opportunity to measure and to interpret the isotopic compositions of certain chemical elements in geological materials. The phenomenal growth of isotope geology during the last 25 years is an impressive indi­ cation of the success of their efforts. We have now entered into a new phase of development of isotope geology which emphasizes the application of the new tools to the solution of specific problems in the earth and planetary sciences. This requires the active participation of a new breed of geologists who understand the nature and complexity of geological problems and can work toward their solution by a thoughtful application of the principles of isotope geology. It is there­ fore necessary to explain these principles to earth scientists at large to enable them to make use of the new information which isotope geology can offer them.

Present-day society asks more from agriculture than just the production of food. Agriculture is now required to be concerned with the quality of food, ecosystem services, inclusion of marginalized populations, revitalization of rural territories, energy production, etc.This opening up of the future of agriculture encourages rural actors to experiment with new farming systems, using imagination, creativity and determination to replace dominant models. At the same time, low-cost mass-production systems continue on their way, with promises of a future based on green technologies. In this discussion it is important to consider what kind of sustainable development societies really want. Which innovations will help in achieving these developments? What role can research and public policies play in supporting the emergence of these innovations?This book takes the debate beyond the purely technical options and considers social and institutional innovations as well. It demonstrates that innovation is the result of a confrontation between visions of actors who often have divergent interests. There is no single path towards sustainable development and we must find ways to encourage the emergence and co-existence of different types of agriculture and food systems. The success of transitions will not only depend on our capacity to rethink existing models, but especially on our willingness to embark on a creative learning process from which we will inevitably emerge transformed.