One way of looking at our current set of predicaments is that we’ve been on a binge, consuming energy considerably faster than it can be captured and stored by Earth’s ecosystems. While fossil fuels once appeared limitless (and still do to deniers of peak oil), and though we’re literally bathed in energy (in the form of sunlight), the disappearance of the fossil-fuel storehouse accumulated over millions of years isn’t something that can be replaced with anything nearly as convenient as fossil fuels.