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Dorion Sagan (born 1959) is an American author, essayist, fiction writer, and theorist from Madison, Wisconsin. He has written and co-authored books on culture, evolution, and the history and philosophy of science, including Cosmic Apprentice, Cracking the Aging Code, and Lynn Margulis: The Life and Legacy of a Scientific Rebel. His book Into the Cool, co-authored with Eric D.Schneider, is about the relationship between non-equilibrium thermodynamics and life.

Sagan is the son of astronomer Carl Sagan and biologist Lynn Margulis. He has four siblings. His brother Nick Sagan is a science fiction writer.




Co-written with Lynn Margulis

Co-written with Eric D. Schneider

  • Into the Cool: Energy Flow, Thermodynamics, and Life (2005) ISBN 0226739368

Co-written with others

  • Cracking the Aging Code: The New Science of Growing Old - And What It Means for Staying Young (2016 - with Josh Mitteldorf)
  • Up From Dragons: The Evolution of Human Intelligence (2002 - with John Skoyles)
  • Within the Stone: Nature's Abstract Rock Art (2004 - partial text to book of photographs by Bill Atkinson)
  • Atheist Universe: The Thinking Person's Answer to Christian Fundamentalism (2006 - foreword to book by David Mills)
  • Darwin's Unfinished Business: The Self-Organizing Intelligence of Nature (2011 - with Simon G Powell)

Short Stories
  • "The Tchaikovsky Dream Continuum" Cabinet, Issue 54 The Accident (Summer 2014)
  • "The New Age Witch" (1993) - After Hours, #19, summer, pp. 36–45
  • "Love’s Strangers" (2006) Meat for Tea: The Northampton Review, summer, Vol. 1, Issue 3, "Flesh," pp. 3–10
  • "Semi-Naked" (2006) Meat for Tea: The Northampton Review, winter, Vol. 1, Issue 1, "Gristle," pp. 5–24

Awards and honorsEdit


  • "Dorion Sagan." (June 15, 2005). Contemporary Authors Online. Retrieved May 20, 2007.

External linksEdit