Water Conservation, Efficiency, and Reuse

Global water scarcity is intensifying. Economizing on water use will be an important aspect of any effective response. Water recycling and reuse technologies offer possibilities for more extensive use of water, depending on cost. Institutional responses, such as the use of rational pricing and the creation of water markets or exchanges, promise to improve wateruse efficiency. Consumer education is a simple and inexpensive means of economizing on water in the urban and agricultural sectors. Rationing is effective in managing short-term interruptions such as drought. Point-of-use technology will also offer opportunities for economizing on many water uses.

This content is for Registered members only. To subscribe, please
join one of our participating societies or contact the Editorial Team.

Login
Already a member? Log in here
Scroll to Top

December 2025 --The Variscan Orogeny in Europe – Understanding Supercontinent Formation

The Variscan orogen formed between 380 and 300 million years ago through several accretionary and collisional cycles, culminating with the construction of the Pangea supercontinent. This process occurred via sequential opening and closure of oceanic basins, synchronous detachment of Gondwana derived continental ribbons, and their outboard amalgamation onto the Laurussia margin. The Variscan orogen is rather unique compared with other orogenic belts on Earth: its overthickened and dominantly magmatic crust in the central belt, surprisingly minor mantle involvement in the magmatic and geodynamic processes, coherent and pulsed magmatism along the collision suture, and its complex accretionary history. Because its final product, Pangea, is the youngest and best-understood supercontinent on Earth, the Variscan orogeny offers clues for understanding the mechanisms of supercontinent formation.