Qo'nos And Praxis: The Great Work of Klingon Environmental Engineering. (Part one)
The destruction of Praxis in 2293 was detected almost immediately by federation listening posts and starships. It was not until the signing of the Khitomer accords however, that the full story became known. For centuries, the Klingons had mined Praxis for it's rich deposits of dilithium, polysilicate verterium, and cortenum, and used it in later years to construct vast industrial works, including their primary antimatter refineries. Abandoned mines were also used as landfills, burying millions of tons of heavy metals, radioactive substances, and dangerously contaminated components from scrapped starships. Here, it is believed, a test of a safety system meant to prevent total destruction in the event of a Federation attack triggered the cascade failure that lead to not only the destruction of the entire antimatter refinery, but of the moon itself, blow apart in a titanic blast that scattered most of it's mass out of the Qo'nos system altogether. However, Qo'nos did not escape unscathed.
The disaster began with the impact of the immense wave of ionizing and subspace radiation-reports from those outside at the time of the disaster report a blinding light reflected off the ground itself from the blast, and those looking at Praxis directly were permanently blinded. All those not shielded by the bulk of the planet also received a significant radiation dose-not enough to cause acute sickness, but even for Klingons, a dangerously high level of ionizing radiation that may cause cancer in one out of every one hundred witnesses. Plants and animals were also affected-some species had already begun to die back by the time the first pieces of Praxis began to hit the planet.
Although planetary shields and disruptor emplacements did their best to defend against the oncoming rain of rocks, one chunk of Praxis nearly ten kilometers by three dropped into the largest ocean on Kronos just six hours after the disaster, punching through the planet's crust and ripping open a gaping hole through which the planet's mantle could ooze. The immense hundred-meter tidal waves created by the impact were incredibly devistating-as many as 100,000,000 klingons were killed by this single impactor as entire cities were washed away before they could be evacuated. Although this single impact would have counted as a mass-extinction event in it's own right, it was only one of 18 impactors greater than 500 meters in size. Worse however, was still to come.
The physics of the interactions of sub-space active and inactive materials are not hard and fast. However, along with the large amounts of inactive rock, radioactive heavy metals and microscopically fragmented warp-core casings, significant amounts of Subspace Activated Silicates were dropped onto Qo'nos. Even more was actually generated when the shock-wave passed through the planet itself, salting it with a new kind of material that would consume oxygen at a tremendous rate. This property was poorly understood at the time, and one commonly quoted estimate of 'total oxygen depletion in 50 years' must be regarded as totally erroneous, like most science reporting. It was however, true that Oxygen levels in Qo'nos' atmosphere fell precipitously as biomass died off, wildfires raged unconstrained, and the ozone layer rapidly depleted by high-atmosphere aerosols. The activity of the new exotic material did act to help deplete the atmosphere of oxygen-though not to 0%. Rather, estimates indicated that by 2343, the Klingon Homeworld would have had 93% of it's breathable oxygen sequestered in either carbon dioxide or sub-silicate crystalline structures. This would leave only 1.4% of the planet's atmosphere useful oxygen, while nearly 10% would be toxic CO2. Long before that date arrived, the very air of Qo'nos would become unbreatheable to all Klingons, it's biosphere would collapse, massive food imports would be necessary, the climate would spiral out of control, and it would become a sucking economic chest-wound in the first-heart of the Klingon Empire.
Evacuation was now a matter of life and death for the Empire. With starships, industrial capacity, and Federation aid, it might be possible to prevent the worst outcomes. Enough time has now passed for us to make our first assessments of whether or not these measure have been successful.