How Much Information?

Citation
Peter Lyman & Hal R. Varian, How Much Information? (2003) (full-text).

Overview
This online study is an attempt to estimate how much new information is created each year. It covers information distributed in four storage media &mdash; print, film, magnetic, and optical &mdash; and seen or heard in four information flows &mdash; telephone, radio and TV, and the Internet.