At the landmark 1992 United Nations Conference on Environment and Development (Earth Summit), solemn resolutions were made both to protect the world's biodiversity and to co-operate on managing natural forests in a sustainable and ecologically responsible way. If anything, given recent developments in issues such as climate change and poverty, the problem of protecting and sustaining forests should logically have become more important globally. Yet public interest in, and development support for, forest activities have declined and rates of forest loss remain stubbornly high. Why has this...

This volume contains fourteen papers on mathematical problems of flow and transport through porous media presented at the conference held at Oberwolfach, June 21-27, 1992. Among the topics covered are miscible and immiscible displacement, groundwater contamination, reaction-diffusion instabilities and moving boundaries, random and fractal media, microstructure models, homogenization, spatial heterogeneties, inverse problems, degenerate equations. The papers deal with aspects of modelling, mathematical theory, numerical methods and applications in the engineering sciences.

At the landmark 1992 United Nations Conference on Environment and Development (Earth Summit), solemn resolutions were made both to protect the world's biodiversity and to co-operate on managing natural forests in a sustainable and ecologically responsible way. If anything, given recent developments in issues such as climate change and poverty, the problem of protecting and sustaining forests should logically have become more important globally. Yet public interest in, and development support for, forest activities have declined and rates of forest loss remain stubbornly high. Why has this...

Eighteen years of fun, facts and faces with the Alex Welsh Band