translate English to French: It is partly because it is so abundant that hydrogen is so attractive, but it is also because the combustion of hydrogen with oxygen in the air produces only heat and water, and therefore no pollution. These arguments are so persuasive that some foresee an economy in which hydrogen would replace existing fuels and at the same time serve as a source of electricity.
C'est en partie grâce à sa grande abondance que l'hydrogène suscite un vif intérêt mais c'est aussi parce que la combustion de l'hydrogène avec l'oxygène de l'air ne produit que de la chaleur et de l'eau, donc aucune pollution.