VENUS
Venus was terra-formed by adding floating oxygen-producing plants in the atmosphere. However, the falling spores of the plants cause "Venus Sickness" for some people. If untreated, the sickness could be fatal and could even cause blindness.
 

EARTH
After the "Gate Incident," Earth ceased to be the primary planet humans inhabit. The only people crazy enough to stay on Earth are hackers, who hone their skills on the many abandoned communications satellites that continue to orbit the planet, and others who are too stubborn or can't afford to leave.
 

MARS
Mars is the center of activity in the Solar System. Its many craters have been transformed into vast metropolitan areas.

ASTEROIDS
Some asteroids have been colonized, most of them mined for minerals and natural resources.

JUPITER
Moons of Jupiter like Ganymede, Callisto and Io have been terra-formed and colonized. Ganymede is a fishing planet, almost completely surrounded by water. Some of Jupiter's moons were terra-formed with less success. Callisto is frigid, hostile and impoverished. Io is an arid ball of sand.