PositiveThe GuardianUnravelling the surprising stories behind our built environment, it takes readers on a global romp through the ages, from the ancient aqueducts of Nineveh to the double-stacked elevators of the Burj Khalifa ... Writing in a chatty style (which sometimes verges on the patronising tone of a children’s TV presenter), she weaves accessible explanations of scientific principles together with engaging historical stories and personal anecdotes ... Agrawal traces each idea back to its origins, before bringing it up to date with a contemporary example, a format that allows you to dip in and out.