Anna Semlyen is car-free by choice. She rides a folding bicycle with basket or trailer, carpools, takes taxis and sometimes rents a car. A Traffic Reduction consultant in the UK, she has written for several magazines on the topic.Richard Register is one of the world's great theorists and authors in ecological city design and planning. The founder of Urban Ecology and Ecocity Builders, he convened the first International Ecocity Conference in 1990, lectures around the world, and has authored two previous books, as well as an earlier edition of EcoCities.