At first site it doesn't appear that much has changed, but take a closer look, and here are some things you'll notice.
Rooftop Gardens on every rooftop
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Upgrades to the old public transportation systems like kinetic power systems installed all along the rails and in the subway stops.
Many balconies contain Urban Windmills, generating power for charging small devices like cell phones, ipods, cameras, and other small hand held devices. Most apartments are still on the central power grid, but more of the power going into the grid is coming from green energy such as wind farms and hydro. The urban dwellers are doing their part though, reducing power consumption by over %70 between 2010 and now. This was done through more efficient appliances, more conscious usage, and the combined efforts of everyone in the city to do what they could to generate their own power. There are now windmills, solar panels, rainwater collections systems, and many more innovative ways people are generating their own power.
Part of the reason energy production has increased so much recently is also the new micro-credit services that are in place in Toronto. People now have ways to trade their stored energy, as well as many other services to help save energy, fuel, and time through time banks, energy banks, etc. Collaboration is also at a all time high because of all these new opportunities to trade ideas and services.
There are also things you can't see easily like the gutters, which now contain lots of little water wheels that generate power for the extra power needed for extra lighting when it's raining at night.
We're not to 0 Carbon
as Bill Gates challenges us to get to, but progress is being made, and it looks like the human race may be getting the message.