Earth Hour

Tomorrow, March 29th, 2008 at 8pm local time, switch off all the lights for an hour! Join the millions participating in Earth Hour (of course there is a Facebook group, full of information).
Apart from the obvious idea of saving energy, it is important to also remember that light pollution has strong negative effects on a variety of organisms, from insects, to migrating birds, to hatchling turtles.The energy saving of one hour may not be much, but the political effect of the effort is worth it.