Refrigeration allows for the cooling or even freezing of areas and items, providing comfort or a means of preservation, especially in hot areas. This is accomplished through the use of cold stones to pull heat out of their surroundings and replace it with cold. Specialized cold stones called circulators are also available to add movement to the air for more even cooling.
Refrigeration is used to preserve food and other items, and to cool buildings in the heat of the growing season. Various hobbies and games have also been developed to utilize the technology.