One of the great hopes for solving the energy crisis and lowering greenhouse gas emissions is green hydrogen. Green hydrogen is created using renewable energy, and when it is utilized as a fuel, it just releases water and no hazardous emissions. Unlike many forms of green energy, green hydrogen can be stored, and so is a flexible source of energy including for land, sea and air transport. China, the US, and Europe all have hydrogen as a strong bet. Both the US and the European Union have recently approved subsidies totaling €5.2 billion and billions of dollars in tax credits for green hydrogen projects, respectively. Leaks, though, are a concern that some experts say could invalidate the product’s “green” designation. And the reason for this is that when it escapes into the atmosphere, it can have an impact on other elements, lowering the concentration of molecules that break down existing greenhouse gases and causing global warming. In fact, researchers caution that the impacts of these leaks on the climate would be just as harmful as those of fossil fuels if volumes close to 10% reached the atmosphere in a green hydrogen economy. This is not out of the question as hydrogen is more corrosive than oxygen, it has the potential to weaken and shatter pipes when it enters them. I suggest history will show that leakage of methane from natural gas projects will be seen as one of the great contributors to our current high pollution levels. We cannot let the same happen with hydrogen. Humans have shown that we can make things safe when we choose to invest. We need to take leak proofing hydrogen seriously. We need to invest in leak proofing green hydrogen systems now, and not later. Only then can we say we have a true miracle energy for the future in green hydrogen.