Hosing the Martian biosphere as an invasive species seems inevitable so we may as well do it right and plan the thing out. Rule 1: No single-point-of-failure (

Hosing the Martian biosphere as an invasive species seems inevitable so we may as well do it right and plan the thing out. Rule 1: No single-point-of-failure (e.g. every alien in Independence Day, War of the Worlds, Star Wars: The Phantom Menace, Mars Attacks, etc.). Rule 2: Bio-Dome was a cautionary tale.