.Among the most important trends in modern architecture has been self-sufficiency. By 2050, environmental and resource degradation have become so obvious and huge, it has triggered a radical rethink of production and consumption by citizens. As such, many modern skyscrapers now come complete with the internalised creation of food, water and other resources. Farms often comprise multiple floors of a tower – regardless of its purpose – while rain, mist and condensation are constantly trapped and stored. Advanced 3D printers are available locally on site to manufacture everything from household furniture, to personal transportation, to replacement parts for the building itself. Energy is typically provided by photovoltaics and wind turbines. These are often integrated seamlessly into the building design, so as not to harm the aesthetic appeal. Solar power, for instance, can be collected by window panes or special photovoltaic paints applied to outside surfaces.* The efficiencies for solar have been improving steadily for decades