Feder appeared in the episode on ancient astronauts in the
National Geographic Channel's
Is It Real? and several episodes of the
BBC documentary series
Horizon discussing
Atlantis and
Caral. In 2004, he spoke at the World Skeptics Congress in Italy. Feder's 1990 book
Frauds, Myths, and Mysteries: Science and Pseudoscience in Archaeology attempts to explore various archaeological myths and misunderstandings by comparing phenomena that might otherwise appear unexplainable to similar occurrences and events that are scientifically documented. Feder's work is used as a textbook in a number of undergraduate courses and as of 2020 is in its tenth edition. In April 2001 Feder was consulted by a producer who was putting together a documentary about
Atlantis for
ABC, to follow the release of the network's parent company,
Disney's, animated feature
Atlantis: The Lost Empire that same year, and who was "looking for a reputable university anthropologist who was of the opinion that there is [a] historical and cultural connection between Atlantis and the native civilizations of the ancient New World." Feder issued criticism of the documentary, which he stated was "packaging a television program to look like a science documentary that [...] amounted to an infomercial for a cartoon." Discussing the
Bosnian pyramid with
Steven Novella, Feder stated that it does not make sense that
Visočica is anything other than a natural formation. "It's all about physical evidence... ancient pyramids don't build themselves." Feder claimed that pseudoarcheologists lack the training to do a professional job evaluating items they may find. Feder's book
Encyclopedia of Dubious Archaeology addresses popular myths, by attempting to provide easily understood explanations for why some inaccuracies are perpetuated. In his book, Feder also attempts to delineate the differences between findings that are questionable from "outright frauds." ==Personal life==