The Red Planet. Everyone agrees about the colour, at least. The rest is up for grabs. Is Mars a dead and sterile desert, or teeming with life? Are Martians red, green or blue? Nubile and lithe, or monstrously tentacular? Are they long gone, or waiting still? How do they feel about visitors? Will we become the Martians? What kind of a world might we build on Mars? What myths, new or old, might we create there? Oh – and how many different colours can you put in front of “Mars” to make a clever title? These Marses are of course incompatible, contradictory, and in many cases quite impossible. And Iris Wildthyme has visited them all.