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 "Tell me what you eat, and I will tell you what you are."
– Anthelme Brillat-Savarin


Refrigeration allows construction of the Supermarket building and the Cereal Mills wonder. It also increases your water units' movement speed.

Civilopedia entry[]

Refrigeration is the technology of cooling objects to temperatures below the current ambient temperature. In addition to its most obvious function of chilling or freezing foods to delay spoilage, refrigeration plays a vital part in modern human civilization. Air conditioners allow people to live and function in environments that would otherwise be too hot. And many mechanical and electronic devices require cooling to function properly.

A number of advanced technologies are heavily dependent upon refrigeration. Superconductors, for instance, function best at extremely low temperatures. Space ships and suits must be refrigerated if their inhabitants are to survive in direct sunlight. And the interruption of a nuclear reactor's cooling system is likely to have extremely unfortunate consequences for those nearby.

The invention of the first modern refrigeration system is in dispute, with scientists from England, Australia, Germany and the United States laying claim to the honor. The earliest refrigeration machines were built to make ice; they were constructed in the 1850s. The first home refrigeration systems were constructed around 1900, and the first air conditioning systems were implemented several years later. Residential air conditioners began to gain widespread use in the United States in the 1950s.

Civilization IV Technologies [edit]
Ancient Agriculture Animal Husbandry Archery Bronze Working Fishing Hunting Masonry Meditation Mining Monotheism Mysticism Polytheism Pottery Priesthood Sailing The Wheel Writing
Classical AestheticsB Alphabet Calendar Code of Laws Compass Construction Currency Drama Horseback Riding Iron Working Literature Mathematics Metal Casting Monarchy
Medieval Banking Civil Service Divine Right Engineering Feudalism Guilds Machinery Music Optics Paper Philosophy Theology
Renaissance Astronomy Chemistry Constitution Corporation Democracy Economics Education Gunpowder Liberalism Military ScienceB Military Tradition Nationalism Printing Press Replaceable Parts Rifling
Industrial Artillery Assembly Line Biology Combustion Communism Electricity Fascism Fission Industrialism Medicine Physics Railroad Scientific Method Steam Power Steel
Modern Advanced FlightB Composites Computers Ecology Fiber Optics Flight LaserB Mass Media Plastics Radio Refrigeration Robotics Rocketry Satellites SuperconductorsB
Future Fusion Future Tech Genetics StealthB
B Added in Beyond the Sword