After completing a PhD on the bio-mechanics of tropical trees in the rain forests of French Guyana and Thailand I moved to Edmonton, where plants have a completely different set of challenges to deal with. My subsequent research focused first on frost damage to the water conducting vessels of trees, a topic that should resonate with anyone who ever had to deal with frozen pipes, and later on urban ecology and plants in the urban environment. Recently, I have become interested in how symbiotic relations impact the relative competitive abilities of target species in disturbed soils and how this might help us reclaim e.g. urban sites. The courses I teach include plant biology, applied plant behavior, the history of biology, and urban ecology.