This interview is with Professor Demment whose career at Davis spanned research on the feeding ecology of herbivores, development of a College sustainable agriculture program and the Century (100 year) experiment in long-term research on cropping systems, a program to enhance the quality of young African leaders/scientists in the MS and PhD research here in the US, and the leadership of a federal program that addressed the challenges of people in Asia, Africa and Latin America whose lives depending on livestock. The latter made major advances in a wide range of foci: the link between meat consumption and cognitive development in children, mechanism for the poor to cope with risk in their lives, remote sensing techniques for monitoring carbon sequestering grasslands, cell phones as market information tools for pastoralist and novel means to disseminate information through the Nigerian film industry. Professor Demment also is the PI on the Borlaug LEAP program funded by USAID that has trained 176 young Africans leaders to the MS and PhD level in the US.