Public health, transport, planning, and other researchers from the US, Europe, Australia, Colombia, Canada, and Korea provide 19 chapters on walking and health, sustainable transportation, and urban planning, many based on papers presented at Walk 21 in Sydney, Australia, in October 2014. They discuss the prevalence and trends in walking, including health benefits, the economic value of walking, walking to and from school, and dog walking; connections to the built environment, public transport infrastructure, planning walking environments for people with disabilities and older adults, and pedestrian safety; how walking can be promoted; and case studies of Vancouver, Vienna, Bogotį, and Seoul. -- Annotation ©2017 * (protoview.com) *