38 works in English-language magazines
| Date | Page | Type | Title | Magazine |
|---|---|---|---|---|
| December 1959 | 156 | Essay | Letter (Astounding, December 1959) | Astounding Science Fiction, December 1959 |
| June 1967 | 39 | Review | Intelligent Life in the Universe | The Magazine of Fantasy and Science Fiction, June 1967 |
| February 1968 | 165 | Review | Intelligent Life in the Universe | Analog Science Fiction -> Science Fact, February 1968 |
| July 1973 | 129 | Review | UFO's--A Scientific Debate | Galaxy, July-August 1973 |
| October 1973 | 5 | Essay | Experiments in Utopias | Analog Science Fiction/Science Fact, October 1973 |
| 1974 | 56 | Essay | Judge's Statements (SFWA Bulletin, Fall 1974) | SFWA Bulletin, Fall 1974 |
| 1974 | 75 | Review | Mars and the Mind of Man | SFWA Bulletin, Fall 1974 |
| 1974 | 76 | Review | The Cosmic Connection: An Extraterrestrial Perspective | SFWA Bulletin, Fall 1974 |
| May 1974 | 128 | Review | Communication with Extraterrestrial Intelligence (CETI) | Galaxy, May 1974 |
| May 1974 | 128 | Review | The Cosmic Connection: An Extraterrestrial Perspective | Galaxy, May 1974 |
| April 1976 | 175|175.2 | Essay | Letter (Analog, April 1976) | Analog Science Fiction/Science Fact, April 1976 |
| August 1976 | 92 | Interview | An Interview with Carl Sagan | Analog Science Fiction/Science Fact, August 1976 |
| April 1977 | 16 | Essay | Naming of the Solar Systerm | Galileo, April 1977 |
| April 1977 | 20 | Essay | The Mars Discoveries | Algol, Spring 1977 |
| October 1977 | 90 | Review | The Dragons of Eden | Galileo, October 1977 |
| August 1979 | 44 | Essay | White Dwarfs and Green Men | Omni, August 1979 |
| November 1979 | 14 | Review | Broca's Brain - Reflections on the Romance of Science | Amazing Stories, November 1979 |
| November 1979 | 34|34.1 | Review | Broca's Brain: Reflections on the Romance of Science | Future Life, November 1979 |
| January 1980 | 172 | Review | Broca's Brain | Analog Science Fiction/Science Fact, January 1980 |
| March 1981 | 74 | Interview | Carl Sagan, Mr. Cosmos | Omega Science Digest, March-April 1981 |
| July 1981 | 12 | Review | Cosmos | Amazing Stories, July 1981 |
| July 1981 | 167 | Review | Cosmos | Analog Science Fiction/Science Fact, July 20, 1981 |
| November 1981 | 60 | Essay | Why Man Explores | Omni, November 1981 |
| May 1984 | 40 | Essay | The Nuclear Winter | Isaac Asimov's Science Fiction Magazine, May 1984 |
| November 1985 | 23 | Review | Contact | Fantasy Review, November 1985 |
| December 1985 | 21 | Review | Contact | Fantasy Review, December 1985 |
| December 1985 | 17 | Review | Contact | Locus, #299 December 1985 |
| October 1986 | Review | Contact | Vector 134 | |
| October 1986 | Review | Contact | Vector 134 | |
| November 1986 | 50 | Review | Contact | Science Fiction Chronicle, #86 November 1986 |
| 1987 | 10 | Short Fiction | Contact (excerpt) | Visions, Spring 1987 |
| August 1987 | Review | Contact | Paperback Inferno, #67 | |
| March 1989 | 26 | Essay | Science Fiction: A Personal View | Visions, Spring 1989 |
| December 1991 | 69 | Interview | Playboy Interview: Carl Sagan | Playboy, December 1991 |
| October 1992 | 44 | Essay | On Earth as It Is in Heaven | Omni, October 1992 |
| November 1992 | 4 | Essay | In Memoriam: Isaac Asimov (1920-1992) (Obit) | Asimov's Science Fiction, November 1992 |
| December 1996 | 150 | Review | The Demon Haunted World: Science as a Candle in the Dark | Analog Science Fiction and Fact, December 1996 |
| January 1998 | 148 | Review | Billions and Billions: Thoughts on Life and Death at the Brink of the Millennium | Asimov's Science Fiction, January 1998 |
18 English-language books
Husband of Lynn Margulis in 1957-1965, Linda Salzman Sagan in 1968-1982, and Ann Druyan in 1981-1996.