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.
We have reached planetary boundaries - human pressures on finite, earth systems are at a tipping point. However, the technology to address this near catastrophe is now within our reach, according to expert in sustainable development, Jeffrey Sachs.