: The first successful mass-market electric refrigerator debuted in the United States in 1913 .
At its core, a refrigerator is a heat-moving machine. It doesn't actually "add cold" to its interior; instead, it removes heat from the inside and rejects it to the outside environment. refrigerator
: Refrigeration drastically reduced foodborne illnesses and enabled the global distribution of life-saving vaccines and medications. refrigerator
