Earth

The Cradle of Mankind. Despite the destruction brought by the Days of Fire and both the Third and Fourth World War (and all the conflicts in between) it remains the most populous world of the Solar System and the Solar Commonwealth as a whole, and the center of human civilization. It's not without its own share of problems, however.
It was never united - instead of a single planetary government, there are 174 recognized independent countries on the planet. However, only nine of those remain powerful enough to maintain a sizeable presence (and some ambitions) outside of the Earth's orbit and be signatories of the Second Treaty of Deimos.

Ecosystem

Earth is a definition of the Terran World, with the most diverse and vibrant ecosystem among all planets known to Mankind - despite the severe damages that it suffered in the past. Many species were driven extinct by human hands, by byproducts of their industrialization, climate change and natural disasters (such as the Days of Fire). In the end, however, enough of it persevered for Mankind to be able to begin a lengthy process of restoring it to its former glory.
Each year, many of the previously extinct species are brought back to life through the work of hundreds of thousands of biologists, ecologists and geneticists. The ecosystem steadily expands as the population of Earth either departs for the stars or rebuilds its cities into much denser - and environmentally friendly - planetary habitats, freeing space for the nature to reclaim. One day, Earth will become a new Garden of Eden - and this day will come within a few decades at most.

Climate

In the process of returning to its pre-neolithic state, with dozens of giant atmospheric processors clearing up pollution and excess carbon dioxide from Earth's atmosphere. The process is progressing rapidly and will soon conclude.

Natural Resources

With the rapid expansion of the asteroid mining, Earth's most valuable natural resources is its fertile soil and the nature itself. Earth's main export is is food, raised to space through one of the planet's many orbital elevators at a fraction of the cost that carrying it up aboard a shuttle would demand. It's second main export is a variety of organic goods, such as wood, furs and processed leather.

History

Earth was - and still is - the cradle of Mankind. However, it's last few centuries weren't easy. Starting from the Days of Fire (the period of planet-wide chaos started by the eruption of the Yellowstone supervolcano), Earth spent those years decimated by numerous natural disasters and devastating wars. The Fourth World War was especially devastating, leaving every participating nation an economically broken shell with precious victories to celebrate.
Today, Earth's status is complicated. Several of its major powers have influence going beyond its orbit, their economies - having now recovered from the aftermath of the Fourth World War - allowing them to construct and maintain a sizeable Space Navies, ones capable of competing with those of the other worlds of the Solar System. Others, however, are focused entirely on their internal politics and treat everything beyond Earth as an interesting subject to talk about, but nothing more than that.
Majority of its population is busy minding its own business and repairing Earth's ecosystem and climate, while providing colonists for the newly settled worlds.

Earth
Summary
Distance from Sun: 93 mil. km
Diameter: 12 742 kmkm
Solar Constant: 1
Mass: 1 Earths
Mean Density: 5.518 kg/L
Orbital Period: 365 Earth days
Day Length: 1 Earth days
Rotation Axial Tilt: 23.5 degrees
Astrography

Object Type: Terrestrial Planet
Object Subtype: Terran
Primary Location: Core Sector
Secondary Location: Solar System
Tertiary Location: Earth Subsystem
Satellites: Luna
Transshipment Station: Unity Station

Habitation Status

Status: Colonized
Classification: Homeworld
Population: ~7 bln.
Capital: Disputed.
Government: Multiple, Listed Beneath
Solar Commonwealth Member: Yes.
Governments
European Sympolity
Visehrad Alliance
Russian Empire
Chinese Federation
East Asian Treaty
North American Trade Union
New Islamic Caliphate
Federative Republic of Brazil
Republic of India