Things To Come,

and this may be nearer than you think,

it is a fact that cities are growing and for many of them the only way is up, but new skyscrapers will cast long shadows, but there is an answer to that problem, a pair of buildings that work together, reflecting sunlight to minimise shade, so architects at the firm NBBJ in London decided to see if they could come up with an entirely shadowless building, they used computer modelling to design a pair of buildings, one of which works like a gigantic, curved mirror, the glass surface of the northernmost building reflects light down into the shadow cast by its southern partner, and the carefully defined curve of that glass allows the reflected light to follow the shadow throughout the day, note that the reflected light is diffuse, not a focused death ray that could fry an egg or burn tourists,    

the architects designed this particular concept as a potential pair of towers in Greenwich, England, right on the Prime Meridian, but the software can be used to build any skyscraper anywhere, all you need to do is change the inputs: when and where the sun passes overhead at your location, the approach could be helpful in places like New York, where residents have resisted the construction of several new skyscrapers that they say will plunge Central Park into shadow, now what was the book that H. G. Wells wrote in 1933? The Shape of Things To Come, perhaps this type of paired buildings will be one of them.