There are many examples of failed or replaced scientific theories throughout history, like heliocentrism or the four-element theory of matter. Can you think of any examples from the last 50-75 years of a theory once held in high regard that is now thoroughly discredited? [more inside]
posted by GhostintheMachine on Mar 2, 2009 - 45 answers

Scientific History Filter / Native German Speaker Filter. What did Christiane Nüsslein-Volhard's 1985 exclamation, "Das war ja toll!" mean? [more inside]
posted by kisch mokusch on Feb 25, 2008 - 11 answers