Steven Elliott, of the Physics division’s Neutron Science & Technology group, is a world leader in the physics field of weak interactions, one of the four fundamental forces of nature beside the strong nuclear force, magnetism and gravity. His work has been at the center of the discovery of neutrino mass—one of the most important discoveries in fundamental physics in the past several decades. With over 12,000 citations and as a Fellow of the American Physical Society, his work is recognized the world over.