Pre-lights out entertainment during Earth Hour Laos 2010.

Senior Lao government official about switch off for Earth Hour for the first time in Vientiane Capital, March 27th 2010.

Pre-lights out performance for Earth Hour at Patuxai, Vientiane Capital, March 27 2010.

Madame Khempheng Pholsena, Minister to the Prime Minister’s Office and the Director General of the Water Resource and Environment Administration talks about the importance of action against climate change.

Earth Hour Laos 2010.

Earth Hour Laos on the night.

Senior government officials shoulder to shoulder with Stuart Chapman, Director, WWF Greater Mekong Programme, and Roland Eve, Director, WWF Laos Country Programme (far left) for Earth Hour 2010.