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May 22, 2022 @ 11:00 am - 12:30 pm

Human activity has now resulted in crossing four of nine planetary boundaries. These are: 1) excess flows of nitrogen and phosphorus, 2) loss of diversity, 3) excess impact of novel entities and 4) excess variability of access to green water. In addition, the probability of staying below a 1.5C increase in average global temperature is now less than 10%. There are possible pathways for humans to adapt, within the limits of Earth Systems. Negotiating our place will require appropriate understanding and responses to real limits, in real time, in the context of increasing inequalities.


Biography:  Ralph C. Martin grew up on his family farm in Wallenstein, ON. After 4-H, his formal education includes a B.A. and an M.Sc. in Biology from Carleton University and a Ph.D. in Plant Science from McGill University.  His research and teaching began at the Nova Scotia Agricultural College, in 1990, and he realized students teach him too. In 2001, he founded the Organic Agriculture Centre of Canada  www.dal.ca/faculty/agriculture/oacc/en-home.html to coordinate university research and education pertaining to organic systems, across Canada . In 2011, he was appointed as Professor and the Loblaw Chair in Sustainable Food Production at the Ontario Agricultural College, University of Guelph. In 2019, he retired and published his book, Food Security: From Excess to Enough


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May 22, 2022
11:00 am - 12:30 pm


122 Harris St / Zoom


Ralph Martin