SMRTR Science & EngineeringMay 18, 2026Interesting Engineering

Europe’s mountain ranges may hide vast natural hydrogen reserves underground

SMRTR summary

Europe's mountain ranges, particularly the Pyrenees and the Alps, may sit atop vast reserves of natural hydrogen formed through a chemical process called serpentinization, where iron-rich rocks react with water to release hydrogen gas. A new study found that erosion plays a key role — moderate erosion helps, but excessive erosion destroys potential reserves. This clean energy source could power vehicles and decarbonize heavy industries without the high costs of manufactured hydrogen.

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