The High Frequency Active Auroral Research Program is an ionosphere research program that is funded by University of Alaska,  US Navy and US Airforce. Controversies have been making the rounds that it is used by the US to manipulate climate. People are fearful and apprehensive of its effects and how easy yet dangerously it is purported to control the climate over different geographical regions.

HAARP actually is one of the research areas investing in geo engineering. Geo engineering employs manually changing the Earth's atmospheric system by introduction of gases in the ionosphere region or stratosphere to reduce the global warming and remove excess carbon dioxide. This technology involves introduction of sulphur gases that reflect more sun rays coming back to sun thus disabling them to reach earth surface and consequently heat it. It has an overall cooling effect on Earth's surface.

Weaponising the climate and using it as a war tool is not an altogether new  idea. The US has been blamed for extending the monsoon rain period over the South East Asian region during the Vietnam war. It has also been said that HARRP is a secret hidden weapon of USA that has been employed by it to bring tornadoes, hurricanes and cyclones.

A leading scientist from Rutgers University claimed recently that CIA approached him and asked about climate interference. Whether climate interference is a chimera or a reality is still yet marred by many speculations. Scientists assert that if there had been any such attempts to modify the environment by introduction of gases then some equipment must had been deployed for it and it would be impossible not to detect such an instrument in the atmosphere.

Even with the rumors and conspiracies aside, cloud seeding attempts by Russia have been repeatedly used by to produce clouds and control them. Moreover the Beijing Weather Modification Office also made headlines when it was said to have controlled weather ahead of the 2008 Olympic games. Whatever secret purpose the HAARP program had fulfilled or intended to fulfill has stopped how that the US Airforce notified the government in 2014 about its imminent closure.