For generations, fusion has been treated as a brute-force problem—a matter of raw heat and pressure, indifferent to its surroundings. Researchers at UC Davis and Lawrence Berkeley National Laboratory have quietly overturned that assumption, discovering that the materials enclosing a fusion reaction are not passive bystanders but active participants, capable of amplifying reaction rates by a factor of a quintillion at energies where fusion was thought nearly impossible. The finding, published in Nature Communications, inaugurates what the team calls 'materials-driven fusion'—a discipline that a