In his Mars trilogy, Kim Stanley Robinson provided some fodder for debate. Briefly, it boils down to Reds versus Greens, i.e., those who favor the maintenance of Mars in its pristine state versus those who favor terraforming it. The debate itself is a lot more interesting than the books, with their one-dimensional Ayn Randish personalities and their far-fetched plot premises. I don’t want to debate the books or the details with which they treat the problem, but rather the problem itself.
There are multiple factes of debate:
[li]Scientific considerations[/li]
Is terraforming Mars even possible or practical? On earth, the ecology is such a delicate and complex balance of spontaneous order that the extinction of even one species can cause unpredictable ripples throughout the environment. Can science effectively create an ecology on a planetary scale that will be self-sufficient?
Will the horse bite the hand that feeds it? Assuming that science is able to create an oxygen rich atmosphere in which man can survive and that natural selection will apply on Mars, can an environment emerge that is so hostile to man that he will find he has created a Frankenstein? Will creatures evolve who eat men or give men incurable diseases? Will man “fit” into his new creation?
If there is already microscopic life on Mars, will terraforming destroy it? And if it does, will there be any negative ecological effects? Can Martian gravity hold a sufficiently dense atmosphere to which man can successfully adapt?
How much havoc will the solar system itself wreak on Martian colonies? What will happen when micrometeors hit plastic domes like hypersonic bullets? What will happen when Martian shrapnel showers the habitats and factories in one of the many violent Martian wind storms?
[li]Ethical considerations[/li]
Is colonization itself unethical? Is there some ethical principal that gives man the right to invade an environment and form it to suit himself? If existing Martian life is destroyed by terraforming, is that a bad thing? Will man have interfered in an evolution that might have taken place without him?
[li]Political considerations[/li]
This is probably the most complex debate. Who will call the many shots to be called? Private enterprise? Government? Who holds the deed to Mars? Can governments declare eminent domain over Martian territory? If so, which ones?
Who will pay for terraforming and by what justification? Will those who provide the blood, sweat, and capital be allowed to own what they have improved, or will politicians step in after the hard work is over and stake their claims?
Will Redpeace send saboteurs to throw a monkey-wrench in the works? Will present-day environmentalists be the ones in favor of terraforming or the ones opposed to it? [!!!]
Can governments maintain multi-generational projects such as the thousand-year terraforming of Mars? What happens if the process is begun and then abandoned, the way America abandoned exploration of the Moon?
Will a Martian war with Earth be inevitable? Will colonists, tired of interference from people thous… er millions of miles away, rebel and declare their independence? Can governments on earth effectively control colonies on Mars?
Feel free to debate any or all of the aspects above or ones of your own. I’ll tell how I see it in the first response post.