We know that Peak Oil has arrived, or will soon, but it is still something of an abstraction.

Here is a way to experience it first hand: On March 26 join Earth Hour from 8:30-9:30 p.m., when people around the globe are turning off their lights (www.earthhour.org).

My family first experienced Earth Hour last year. My wife, my 15-year-old and I turned off all our lights, then looked out the window to see if anyone else had done so. We were the only ones. Then we lit a few candles and tried to figure out what we would do for an hour without TV, DVD, reading lights, stereo – our usual energy-powered distractions.

We finally settled on our bed and told stories. We asked ourselves when that last happened in our household.

Earth Hour is a powerful reminder of our addiction to energy, especially fossil fuels. Earth Hour is a spiritual moment to focus on family, relationships – even love – rather than on messages and stimulation from without, and on energy efficiency, mass transit, alternative energy and a smaller environmental footprint.

Turn out the lights at 8:30 p.m. on March 26. It is amazing what can be discovered in the dark.