We cannot underestimate the challenge we face. The transition away from a dirty, fossil fuel-based economy to a clean, renewable energy future is one of the largest and most important undertakings of our generation. Making this transition happen will benefit our health, our economy, our livelihoods and our shared future. It is the most important thing we can do to prevent catastrophic climate change. Federally, Canada is falling behind, but many provinces and municipalities are showing the leadership Canadians deserve.