Imperial Earth

infobox Book |
name = Imperial Earth
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author = Arthur C. Clarke
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country = United Kingdom
language = English
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publisher = Gollancz
release_date = 1975
media_type = Print (Hardback & Paperback)
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isbn = ISBN 0-575-02011-3
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"Imperial Earth" (ISBN 0-15-144233-9) is a novel written by Arthur C. Clarke, and published in time for the U.S. bicentennial in 1976 by Ballantine Books. The plot follows the protagonist, Duncan Makenzie, on a trip to Earth from his home on Titan, ostensibly for a diplomatic visit to the U.S. for its 500th birthday, but really in order to have a clone of himself produced.

Plot summary

Duncan Makenzie is the latest generation of the 'first family' of Titan, a colonised moon of Saturn. Originally settled by his grandfather Malcolm Makenzie in the early 23rd century, Titan's economy has flourished based on the harvest and sale of hydrogen mined from the atmosphere, which is used to fuel the fusion engines of interplanetary spacecraft.

As the plot opens in 2276, a number of factors are combining to make a diplomatic visit to the 'mother world' of Earth a necessity. Firstly, the forthcoming 500th anniversary of US Independence which is bringing in colonists from the entire Solar System, obviously needs a suitable representative from Titan. Secondly, the Makenzie family carry a fatal damaged gene that means any normal continuation of the family line is impossible — so both Duncan and his "father" Colin are clones of his "grandfather" Malcolm. Human cloning is a mature technology, but is even at this time ethically controversial. And thirdly, technological advances in spacecraft drive systems — specifically the 'asymptotic drive' which improves the fuel efficiency by orders of magnitude — means that Titan's whole economy is under threat as the demand for hydrogen is about to collapse.

A number of other sub-plots suggest some sort of greater mystery, but remain unexplored. The book ends with him returning home with his new "child" Malcolm (who is a clone of his dead friend Karl), leaving the other plot threads dangling.

Major themes

The puzzle game Pentominos features in a prominent subplot of the novel.

The book offers socially liberal ideas about sexuality and racial attitudes. For example, Duncan Makenzie is Black. This is not mentioned until approximately halfway through the book; his race is no more significant to him than his hair color. At several points Makenzie also reminisces about sexual affairs with males, and that bisexuality is now considered the norm. Exclusive heterosexuality or homosexuality is not generally practiced.

Clarke describes in great detail throughout the book a personal communications device called a 'minisec' combining mobile video phone and PDA with global data connectivity. He also describes a larger desk 'comsole' or communications console giving similar access to global information services.

Editions

The original UK hardcover edition (ISBN 0-575-02011-3) has the subtitle "A Fantasy of Love and Discord" and has 38 chapters and "Acknowledgments and Notes". The later US hardcover edition adds a quote from Ernest Hemingway, has 43 chapters, drops the subtitle, and expands the Acknowledgements and Notes. The later US paperback edition also features an "Additional Note" about a possible biological error in the plot.