Earth Hour More than 5,200 cities and towns in 135 countries worldwide switched off their lights for Earth Hour 2011 alone, sending a powerful message for action on climate change. Tonight at 8:30PM the world will once again unite to protect the planet by going dark. Will you shut down to show you care? For more information on this globally conscious event, visit EarthHour.org to learn how you can help for just an hour, and beyond.

Earth Hour

More than 5,200 cities and towns in 135 countries worldwide switched off their lights for Earth Hour 2011 alone, sending a powerful message for action on climate change. Tonight at 8:30PM the world will once again unite to protect the planet by going dark. Will you shut down to show you care?

For more information on this globally conscious event, visit EarthHour.org to learn how you can help for just an hour, and beyond.