HIDDEN HYDROGEN Does Earth hold vast stores of a renewable, carbon-free fuel?

https://www.science.org/content/article/hidden-hydrogen-earth-may-hold-vast-stores-renewable-carbon-free-fuel?utm_source=sfmc&utm_medium=email&utm_campaign=DailyLatestNews&utm_content=alert&et_rid=682362580&et_cid=4601433