Terraforming

When it comes to the ethics of actions, such as the decision to terraform Mars, we should ask: What sort of person would do that—a virtuous or vicious one?Photograph by Kees Veenenbos / Science Photo Library In Kim Stanley Robinson’s science-fiction Mars Trilogy, human colonists “terraform” Mars, turning the rocky red planet into a lush […]

How to terraform a room-temperature Mars in 100 years.