Comment Re:Even better idea... (Score 1) 236
"Otherwise, (besides Mars being smaller and colder and having no magnetic field) they're pretty similar."
So you make his point: worse case scenario, Earth won't be any worse than Mars, so it seems wiser to...
a) hope for the best: maybe Earth's worst case scenario doesn't happen
b) Only once worse case scenario you go afte the "terraforming" endevour, only here, in the Earth, instead of going to Mars to do the same in a worse planet: being shorter you will always have a harder day to sustain an atmosphere there than in the Earth.