hen the price of carbon reaches $100 a tonne, then it will become an economically viable business proposition to start taking CO₂ out of the atmosphere and sequestering it underground.

New information technologies-including email, the web, and computerized blast-faxes and phone calls-have fundamentally changed the landscape of political competition in modern democracies. They've done so in three ways: by dramatically boosting the access of individuals and special interests to politically potent information, by making it easier for such people to coordinate their activities and exert political power, and by greatly increasing the pace of events within our political systems.

Bitumen is junk energy. A joule, or unit of energy, invested in extracting and processing bitumen returns only four to six joules in the form of crude oil. In contrast, conventional oil production in North America returns about 15 joules. Because almost all of the input energy in tar sands production comes from fossil fuels, the process generates significantly more carbon dioxide than conventional oil production.

hen the price of carbon reaches $100 a tonne, then it will become an economically viable business proposition to start taking CO₂ out of the atmosphere and sequestering it underground.

Our marvelous new information technologies boost our power and opportunities for political engagement, but they can also disempower us by contributing to extreme political mobilization that sometimes overwhelms our institutions. These institutions were designed for rural societies operation at a tiny fraction of today's speed and with a citizenry vastly less capable that today's. It's unclear how they will change to adapt to the new reality, but change they must.