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Marc Johnson

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Professor of Biology, Canada Research Chair of Urban Environmental Science, University of Toronto

The northern resident orca is one of the species threatened by major infrastructure development in Canada. (Unsplash/Thomas Lipke)

June 3, 2026

Canada’s ‘major projects’ should not come at the cost of the environment

Julia K. Baum, University of Victoria; Marc Johnson, University of Toronto, and Sarah Otto, University of British Columbia

Impact assessments prevent harm before it occurs. Circumventing the process before we understand the risks is misguided and a gamble with our collective future.

For many species, human actions are the biggest factor in their evolution. Andriy Onufriyenko/Moment via Getty Images

October 27, 2022

From radiation to water pollution to cities, humans are now a driver of evolution in the ‘natural’ world – podcast

Daniel Merino, The Conversation and Gemma Ware, The Conversation

In this week’s episode of The Conversation Weekly, we speak with three scientists who study the ways plants and animals evolve in a world dominated by humans.

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Location: Canada
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Joined October 26, 2022