Residents and students plant tree seedlings at the protected rainforest site in Pili, Camarines Sur, south of Manila, February 23, 2011. The provincial government of Camarines Sur held a simultaneous 500,000 tree-planting activity for the period of one hour on Wednesday that aims to plant 12 million trees until 2012, in the province?s 35 towns and one component city. REUTERS/Erik de Castro (PHILIPPINES - Tags: ENVIRONMENT)