What materials keep things cold?

There are many materials that keep things cold. Some of the most common include:

* Insulation: Insulation is a material that resists the transfer of heat. It is typically made from fiberglass, cellulose, or polystyrene. Insulation can be installed in the walls, attic, and floors of a home to help keep it cool in the summer and warm in the winter.

* Reflective materials: Reflective materials reflect heat instead of absorbing it. This can help to keep things cool by preventing heat from being transferred from the sun or other sources. Reflective materials can be used in window treatments, awnings, and other exterior surfaces.

* Thermal mass: Thermal mass is a material that absorbs and stores heat. This can help to keep things cool by absorbing heat from the air during the day and releasing it at night. Thermal mass materials can include concrete, stone, and brick.

* Evaporative cooling: Evaporative cooling is a process that uses the evaporation of water to cool air. This can be done by using a swamp cooler or a mister. Evaporative cooling is most effective in dry climates.

By using a combination of these materials, it is possible to keep things cool even in the hottest weather.