Geographical - Shifting sands: mining the seabed for sand and gravel for use in construction is a major industry in the UK. But while the official line from the government...

Published on: Sat, 01 Mar 2008 08:00:00 GMT

March 1, 2008 -- [ILLUSTRATIONS OMITTED] Concrete, an alien might reasonably conclude, is as indispensable to life on Earth as oxygen and water. In the UK alone,... More »