Peter is a pioneer of the fields of information architecture and user experience. His bestselling books include Information Architecture (the "polar bear book"), Intertwingled, Search Patterns, and Ambient Findability. He has been helping people to plan since 1994, and advises such clients as AT&T, Cisco, Harvard, IBM, the Library of Congress, Macy's, the National Cancer Institute, Quicken Loans, and Vodafone. His work has been covered by Business Week, NPR, The Economist, The Washington Post, and The Wall Street Journal. His latest book is Planning for Everything: The Design of Paths and Goals.