We are entering a new world where skyscrapers and other huge buildings are becoming redundant and need significant overhaul or replacement. The process is called unbuilding or, if you're a bit highfalutin, deconstruction...
Norman Day 21 Jan 2020
From a holographic lion to talking robots and flying taxis, Saudi Arabia has dazzled investors with plans for hi-tech "giga projects" - but sceptics question their viability in an era of cheap oil...
30 Oct 2017