After the completion of the project to terraform Mars, issues of overpopulation on Earth nearly basically went away. Since then, other colonies have been founded, lowering the population of Earth even further. At the present day, Earth is by far the most comfortable place to live, and has a population of 6 billion. After the failure of the United Solar System Colonization Effort and the formation of The Terran Federation, Earth’s nations finally decided that while complete unity was not possible, answering to a body “of Earth’s individual nations, but held above them in authority”, was acceptable. The name United Nations was recycled and given to this body, however, it was later absorbed into the idea of The Terran Federation. Earth is the political and industrial capital of the Terran Federation.