Thinking about yesterday's Earth Hour, I remembered this (click here for the full-size version):
It's an animated movie created by some researchers at Google showing how the geographical distribution of requests to google.com changed throughout the day on 14 August 2003. (To what end? Details here if you're interested.)
The activity on the map is highly correlated with economic prosperity, education, enlightenment and energy. The interior of the African continent is one of the darkest regions.
An equivalent map for Earth Hour, with light intensity corresponding to switched off (or non-existent!) lights, would show the interior of the African continent as one of the brightest regions.
Absurd or what?