The HAARP project is a United States government project to project billions of watts worth of radio waves into the ionosphere. Radio waves have the potential to cause vibrations in the ground and can thus cause earthquakes.
This means that the controllers of HAARP have the ability to modify, what had been exclusively a natural phenomena, as well as weather patterns.
Over the skies of the Sichuan, China epicenter, where the major earthquakes have been happening recently, a rainbow colored cloud was seen, just minutes before the first big quake.
Benjamin Fulford did an interesting investigation into the evidence surrounding these claims. He also noted that a mysterious plasma weapon was seen prior to the Niigata earthquake in July 2007.
Taiwanese satellites measured a 50% drop in ionospheric energy above the Sichuan epicenter on the day before the quake. Both earthquakes seem to have happened near nuclear military facilities.