Well, while we're waiting for Shihong (though I can also have the conventional forces go off on auto)  Here's some more background:<br/><br/><br/>On LCL and DSR:<br/><br/>The meteorite that destroyed the Antarctic continent and threw the Earth off its axis contained a massive volume of the mysterious substance known as DSR.  DSR stands for Dead Sea Reagent, and it is a complex organic molecule which has the property of converting any organic molecule that does not contain human DNA into its base organic components.  DSR has approxomately the same phase properties as water, existing as a liquid or gas at room temperature, depending on atmospheric pressure.  In the Dead Sea, formerly antarctica, DSR concentrations are sufficiently high that not even microbes can survive, though human beings can exist there without the slightest problem.  Water with high concentrations of DSR is not potable, but is generally not fatal to drink, aside from causing severe digestive distress by killing intestinal bacteria.<br/><br/>After the second impact, DSR flowed through the oceans and weather patterns of the world, eventually killing all life in the Southern, Indian, and Southern Pacific oceans.  The remainder of the Pacific ocean had about 50% of life within it killed, while the Atlantic ocean only suffered about 30% depletion thanks to the melting arctic ice cap diluting the DSR to less fatal levels, and the Arctic ocean was essentially unscathed.  Today, viewed from space, the Southern parts of Earth have red seas and black/red clouds, while the planet gradually transitions from a rainbow of reddish colors to the pure blue oceans and white clouds of the Arctic.  Much of the Southern hemisphere's land is tainted black and brown, with a few stark white deserts showing through the oppressive red stormclouds.  Crops in any latitude need to be shielded from DSR tainted rain, as red clouds frequently keep sneaking up from other latitudes, potentially killing entire crops if not attended to.  Eventually, the DSR will become evenly distributed and kill everything in every ocean on Earth not hardy enough to withstand it, though aquatic mammals will be the last to die.  This caused much terror for a while, till NERV invented LCL to solve the problem.<br/><br/>The unique properties of DSR were discovered almost immediately, and it was quickly put to work as the most effective and perfect antiseptic and pesticide ever seen.  Though it must be used carefully, many people now take bacteria pills to keep their bodies stocked with beneficial microorganisms killed by environmental DSR.  Despite the complications of protecting against blood rain, (the term for DSR tainted precipitation) crop yields have actually increased considerably, thanks to easy methods of preventing loss by disease or parasite.  Hospital infections have dropped to a lower rate than ever before in human history, which is credited with lowering the death rate caused by the Second Impact.  DSR even makes an incredibly perfect preservative, though it is damaging to the digestive tracts of the consumer and the nutritional properties of food if insufficient clean water is available to dilute the DSR to safe levels.  The new technologies derived from this have conspired to make food available in great variety, and similar brands to what existed before the Second Impact, despite much lower amounts of arable land.<br/><br/>In 2008, GEHIRN revealed that they had finally developed an "antidote" for DSR, a substance which completely negates the properties of DSR, including encouraging microbial growth sufficient to restore DSR tainted blood water to normal seawater.  (Treated water must still be distilled before it becomes freshwater again; normal DSR tainted water cannot be purified by distillation)  That substance is known as LCL, though what the acronym stands for has not yet been released.  The only LCL plant in the world is in Babylon, and many of the workers in Metropolis are involved in bottling, refining, processing, and shipping LCL to purification centers all over the world.  LCL is, of course, a key component in the Evangelions, though there seems to be enough LCL to go around.  In the South Pacific, large purification centers are already working on the task of restoring large amounts of seawater to their original state, and it is believed that LCL will eventually save humanity from a fate of being destroyed by the extinction of all life on Earth.  (though some futurists have already drawn up proposals for a future in which human beings farm cloned human flesh to survive, modifying their bodies to become a new life form entirely.)