Safety is the state of being "safe" (from French sauf), the condition of being protected from harm or other non-desirable outcomes. Safety can also refer to the control of recognized hazards in order to achieve an acceptable level of risk.
Now, it is true that the nature of society is to create, among its citizens, an illusion of safety; but it is also absolutely true that the safety is always necessarily an illusion. Artists are here to disturb the peace.
James Baldwin "An interview with James Baldwin" (1961)
EU-funded scientists successfully developed a system that generates electricity from low-temperature waste heat ranging from 60 to 120 °C. Harnessing low-grade heat should help to significantly mitigate the negative environmental impact of industrial plants.