I have always assumed that sprawl is a Bad Thing. For Jane Jacobs, in â€˜Dark Age Aheadâ€™, urban sprawl is something that “murders communities, and wastes land, time, and energy”. Sprawl is frequently blamed for environmentally-damaging transport intensity, the collapse of communities, even obesity. But James Woudhuysen, for one, thinks density has been over-sold, and that land in many countries is under- not over-used. The author of “Why is Construction So Backward” is a speaker at an intriguing seminar in London on 3 March. He appears with Ken Yeang (international architect and author “The Green Skyscraper”) and Tristram Hunt, historian, broadcaster and author of the excellent Building Jerusalem: The Rise and Fall of the Victorian City. The seminar is organised by Austin Williams, Director of the Future Cities Project.