September 9, 2021 Poste, G. Characteristics, Accomplishments and Challenges of Existing Systems. Virtual Forum on Complex Food and Agricultural Systems: Engineering for Sustainability and Resilience. (Sep 9, 2021) Home ยป Poste, G. Characteristics, Accomplishments and Challenges of Existing Systems. Virtual Forum on Complex Food and Agricultural Systems: Engineering for Sustainability and Resilience. (Sep 9, 2021)