Cryogenic freezing is a process that involves cooling materials to extremely low temperatures, typically below -150 degrees Celsius. This technique is often used to preserve biological samples, such as cells and tissues, by slowing down molecular activity and preventing damage from ice crystal formation. In addition to biological preservation, cryogenic freezing is also applied in various industries, including space exploration and medical research. For example, it can be used to store human embryos for in vitro fertilization or to preserve organs for transplantation, ensuring they remain viable for future use.