If you work for a young web company, you probably think your office is pretty cool. Maybe it has a pool table or even a roof terrace. Pah! Give it 37 years and, according to engineering company Arup, our office blocks will contain working farms, produce their own energy, be linked together by suspended green walkways and sections of each floor will be removable, upgradable and replaceable. Intersting article on Smart Cities that looks into some of the key innovations by Shell and IBM.