What is geothermal air conditioning?

Geothermal air conditioning is a central cooling system that delivers cool air by pumping heat towards the ground. The difference between it, and an Air Conditioner, is that while an Air Conditioner uses a refrigeration cycle to de-humidify a room, a geothermal air conditioner takes advantage of the ground itself as a heat sink to pump the heat away from a home and into the ground.