Canada needs an additional 3.5 million housing units by 2030 to address its housing shortage. Various governments are trying to increase supply, from cities adopting “missing middle” policies, B.C. legislating municipalities to increase density, or the federal government slating public lands for affordable housing. Trees, meanwhile, help cool the air, manage stormwater, sequester carbon, decrease air pollution, provide wildlife habitat and promote people’s mental and physical health. And when they grow in the same places people are trying to build that much-needed housing, sometimes a choice has to be made: keep the trees, or cut them down? This balance is something that municipalities across the country are grappling with as they try to address Canada’s housing and climate crises simultaneously. …Governments and industry are learning how create to desperately needed housing without sacrificing the tree canopy that keeps streets cool, absorbs floodwater and cleans the air.