Blue hydrogen is often touted as a low-carbon fuel for generating electricity and storing energy, powering cars, trucks, trains, and heating buildings. But according to a new report by Cornell and Stanford University researchers in the US, it may be no better for the climate – and potentially a fair bit worse – than continuing to use fossil natural gas, which currently keeps 85% of UK homes warm. In the US, about half of all homes use natural gas for space and water heating. So what is hydrogen fuel – and what makes it blue? According to the International Energy…
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