Micro-mechanician Bill Robertson builds sophisticated, fully working replicas of rare tools, gadgets and houses from the 17th and 18th centuries. His exquisite creations put history’s hidden details in the palms of our hands.

Supertall buildings have become just another part of the urban scenery. They are, writes science fiction writer Bruce Sterling, “stunningly factual, immediately obvious, impossible to overlook.” But what of the unbuilt towers of the future? What might *they* look like. With his customary lyricism, Sterling describes four classes of future skyscraper.

Plunge into the deep Balinese jungle and you might suddenly find a bamboo building soaring above you. Made from a frankly unlikely building material, the ethereal structures are the brainchildren of designer Elora Hardy and her team. Take a look.