Vol. 20 No. 2 (2026): May

Cover image by Jiacheng Dai on pages 145-162. The image illustrates the hydrogen–geothermal co–production process in a peridotite formation stimulated by hydraulic fracturing using horizontal wells. Injected water flows through the fracture network between the wells, absorbs heat from the surrounding rock, and promotes serpentinization. This process enables hydrogen generation and geothermal fluid production.