Evacuation of Keiñei

The Evacuation of Keiñei was a multi-millennia long megaproject enacted by the Keiñuans in their early spacefaring history. The project was originally conceived as Keiñei began entering into a catastrophic climate runaway, with the goal of relocating as much of the population as possible to various colonies artificial habitats constructed across the Řaqani system. It gained traction as terrestrial options to deal with the crisis had either failed or lost political favour whilst rapidly expanding space infrastructure made relocation a far more humane and cost effective solution.

Prelude
The Keiñuan species began rapidly industrialising in the year 22597, emitting vast quantities of greenhouse gases, predominantly carbon dioxide from hydrocarbon combustion, into the atmosphere. At the time the Keiñeian climate was in a relatively hot period, following a recent increase of volcanic activity, and the already stressed biosphere was extremely sensitive to sudden changes in temperature. As the population grew emissions continued to increase, pollution of the seas disturbed marine food chains and forests were cleared for development. Evidence that a climate runaway would occur if remediation techniques were not enacted was discovered around the time the species first achieved spaceflight, approximately 22746, but the severity is believed to have been knowingly downplayed in order to protect industrial interests. In the following decades however, the early effects of increasingly severe weather began to bite, and the global economy suffered. This is likely what spurred a large amount of early attempts at manned space exploration and colonisation, leading to a number of successful bases on Ueqai and the asteroids. The asteroids in particular were very useful for springboarding missions further out into the system, and by the year 22857 there was a keiñuan space presence around much of the inner planets and some of the gas giants. By this point the public was becoming increasingly aware of the climate runaway and its steadily worsening effects, and governments were scrambling for possible solutions if only to avoid mass panic. The most favoured one was the proposal to build a global system of climate controlled domes that would protect those within from the hostile climate. Many such domes were built, however nowhere near enough and often only in the wealthiest nation-states. With the poorest nations receiving scarce assistance whilst often being the worst affected by the changing climate, a sequence of bloody global wars were began occasionally referred to as the brush gutting. Prototype domes and construction sites were often primary targets of indiscriminate bombing, however the most casualties were from a series of nuclear suicide attacks in major cities. The brush gutting would be the main reason why many terrestrial solutions to the climate runaway were abandoned,

The Evacuation
In order to facilitate the evacuation of the population, dozens of mass drivers capable of launching craft into suborbital trajectories were constructed