For years I've been fascinated by how peopole are affected by the changes in the places around them - cities and landscapes - and also by how people themselves change as they move through these places. My latest book, "In Motion: The Experience of Travel," explores a rewarding and vivid wide-awake-ness that travel can evoke - a state of mind I call Deep Travel. More information about Deep Travel and a forum for sharing your own Deep Travel stories can be found at the "In Motion" Web site: www.howwetravel.org"In Motion" is my 13th book. My previous books, which include "The Experience of Place," have also covered train travel, Hunanese cooking, giant pandas, photography, the story of my family, the landscape of the Chicago area, and the landscape and future of the New York City region. I was a staff writer at The New Yorker for more than 30 years and I've lectured widely all over the world. Currently I'm a Visiting Scholar at New York University's Robert F. Wagner Graduate School of Public Service. I live in New York City with my wife, writer Lois Metzger, and our son.