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.
Science (from Latin scientia, meaning "knowledge") is a systematic enterprise that builds and organizes knowledge in the form of testable explanations and predictions about the universe.
The development of clean energy technologies for cars should go hand in hand with investments in infrastructure. EU-funded scientists showed how to halve the energy required for liquefying hydrogen and how to scale up hydrogen liquefaction in Europe, enabling a low-carbon energy supply chain.