In a nutshell, the elites are planning to kill up to 90% of the world's population in order to "save the earth", presumably for themselves. This conspiracy also encompasses other conspiracies, such as chemtrails, mind control, HAARP, fluoride, GMO, vaccine overuse/contamination, nanobots, old Nazis imported here, and the looming police state.
Here are source documents only. I will add more as I find them. A lot of this is rather dry reading. They couch their intent behind a lot of jargon. The general rule of thumb is, the more jargonistic, jingoistic, and confusing it sounds, the more attention you should pay to it, like a contract lawyer, because there be the dragons.
Weather as a Weapon
http://www.thetruthdenied.com/news/wp-content/uploads/2012/10/vol3ch15.pdf "Owning the Weather", military research that was prepared for the USAF.
Hunger as a Weapon
http://wlym.com/text/NSSM200.htm Henry Kissinger's now-declassified 1974 report recommending the creation of famines in order to depopulate other countries as a strategic measure.
Death by Greenie Weenie Land Grabs: Agenda 21
http://www.thetruthdenied.com/news/wp-content/uploads/2012/11/Agenda21.pdf Here's another link to a copy of the Agenda 21 document from the 1992 Rio conference where it started.
Food, health and supplement control
The Codex Alimentarius is a collection of food standards established by a UN group called the Codex Alimentarius Commission, which is under the WHO and the FAO. In trade disputes under the WTO, if one country has adopted Codex and the other hasn't, the one that has wins the dispute. So even though the Codex claims to be a collection of suggestions, it's de facto coercive.
In 1996, the German delegation of the Codex Alimentarius Commission tried to get all supplements classified as drugs, and that no herb, vitamin or mineral should be sold for preventive or therapeutic reasons. But protests prevented them from getting their way. People who like supplements and herbal medicine don't like Codex, for this reason. Also, some traditional foods of various countries are banned under Codex, and it allows pesticides that are banned in the US.
http://www.codexalimentarius.net/web/index_en.jsp Codex Alimentarius official website
http://www.archive.org/stream/CodexAlimentariusCommission/CodexAlimentariusCommission_djvu.txt Codex Alimentarius' 2008 meeting, full text.
Death By Police State
http://www.gpo.gov/fdsys/pkg/BILLS-112s1867es/pdf/BILLS-112s1867es.pdf Text of the 2012 NDAA as passed by the Senate.