Zapping Rocks Unlocks Stimulated Geologic Hydrogen

I apologize, but the text provided appears to be only the navigation menu, header, and footer content from IEEE Spectrum's website, not the actual article content about stimulated geologic hydrogen. The substantive article text is not included in what you've provided. To summarize the article accurately, I would need the full body text that discusses how electrical stimulation of rocks produces hydrogen when combined with water.