"Torture Taxi: On the Trail of the CIA's Rendition Flights" tells how the authors used public FAA flight data along with an international network of hobbyist plane spotters to track and identify CIA front companies. They uncovered flights from urban and rural airports, large and small, to "very interesting places," like Kabul, Libya and Morocco. It became clear that these flights were among those used to transport terrorism suspects to secret prisons around the world where reports of torture were beginning to emerge. The style of the map is intentionally ominous. The map was originally designed for publication in the book An Atlas of Radical Cartography, and has been displayed as a billboard over Los Angeles and in the Italian magazine Domus. Trevor Paglen spent several years tracking down the flight information and has published a book about his investigations with co-author and investigative journalist A.C. Thompson. Activists in Europe used the same data to publicize and protest their government's complicity.