Everything we think about regarding sustainability - from energy to agriculture to manufacturing to population - has a water footprint. Almost all of the water on Earth is salt water, and the remaining freshwater supplies are split between agricultural use and human use - as well as maintaining the existing natural environment.

As our various electronic devices gain more and more sensory awareness, we open up the potential for entirely new forms of interaction. Not just new interfaces - tapping and shaking and whatnot - but a shift in presence.

But here's the ugly truth: nature doesn't care about democracy, or who's right, or what's fair. And because of the slow-change aspect of climate, we can't wait until the worst effects are upon us to make a decision -- by then, it would be far, far too late. The scenario we may be faced with is one where doing something for the wrong reasons, run by the wrong people, may still save more lives than holding out for a more appealing option.

Is there a better example of natural selection in action than 'Project Runway?'

The difference between e-mail and regular mail is that computers handle e-mail, and computers never decide to come to work one day and shoot all the other computers.

Resilience is all about being able to overcome the unexpected. Sustainability is about survival. The goal of resilience is to thrive.

Don't expect to be able to upload your cat's brain into your Roomba any time soon.