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President Macron has announced his wish for France to become a world leader in the production of 'green hydrogen' and there is worldwide interest in this energy source as countries attempt to clean up their economies and reduce their dependence on fossil fuels.

Rachel Fakhry, an analyst on climate and clean energy at the research institute the Natural Resources Defence Council explains how the gas is produced. She explains that although green hydrogen does not occur naturally and is expensive to produce, costs will decline over the next decade and renewable electricity can be used to produce it. She says the main benefit is that it can be used for long distance transportation, such as aircraft and maritime vessels.

"It is seen as a great solution for those applications that need to run long distances like aircrafts, trucks and ships."

Photo: An airplane shipping delivery transfer Credit: Getty Images