If we were built, what were we built for? ... Why do we have this amazing collection of sinews, senses, and sensibilities? Were we really designed in order to recline on the couch, extending our wrists perpendicular to the floor so we can flick through the television's offerings? Were we really designed in order to shop some more so the economy can grow some more? Or were we designed to experience the great epiphanies that come from contact with each other and with the natural world?

Profiting from companies that are overloading the atmosphere with carbon and changing the atmosphere is wrong.

By themselves, they are not enough; we also need to engage in political action.

At least I sure hope it will - and I see good signs all the time, especially in things like the rise of local agriculture.

With each month that passes, a solar panel gets 2 or 3 percent cheaper. So while we're holding the fossil fuel industry in check, the engineers in the renewable energy world are undercutting them from the other side.

Global warming is no longer a philosophical threat, no longer a future threat, no longer a threat at all. It's our reality.

There is basically no one not on the payroll of Exxon Mobil or coal companies who any longer contend that this is not something to worry about.