At this point it would take some very drastic measures. Because we didn't ease into lowering carbon emissions and oil production, now we have to do it in a way that could heavily disrupt everything.

We literally need to cut oil production to a bare minimum at this point. We need to build a mass transit system across Canada to connect all municipalities and allow people to move and work in other cities instead of cramming everyone in Toronto and Vancouver. Cities also need to change how areas are zoned to allow for neighborhoods where people and the services they need can all be accessed on foot in ~15min. Also build better cycling infrastructure. And plant trees! Trees, trees and more trees. Especially in cities. Make them more green and increase shade, reduce the heat