Newspaper is a good heat/cold insulator. In England they are traditional for keeping fish 'n chips warm
"Roofies" were newspapers used as covers to keep out the cold.
Newspapers can help keep you warm by insulating your body against cold weather when used as additional layers of clothing or bedding. However, they are not as effective as proper cold-weather clothing or blankets.
Frozen carbon dioxide is also known as dry ice. It can be used to keep things (such as perishable foods) cold.
preservatives are used in foods to keep the food from spoiling in a short period of time
Hoover Blankets were newspapers used as makeshift blankets by the homeless during the Great Depression, named after President Herbert Hoover. The term reflects the desperation and poverty that many Americans faced during that time, as they were unable to afford proper bedding.
well some foods and beverages (like rootbeer)are stored in brown bottles to keep them cold.the brown of the bottle reflects the sun away from the food or beverage to keep it nice and cold. :)
Metalic cups keeps the water cold and it can be also used to keep the water hot .
A Reefer, or refrigerated truck, used to carry perishable foods.
Heat has a negative effect on aspartame and therefore is not used for very hot foods or drinks, stevia can be used as a sweetener where high heat is used.
styrofoam cups keep you beverages hot or cold because they are awesome
An icebox is a type of refrigerator. It is a chilled box that is used to keep things cold. Ice boxes are kept cold with large blocks of ice that keep the food cold.
String could be used to seal a small crack and keep heat out or cold in.