Yesterday morning, campaign in memory of the 50^th Earth Day was conducted at the foot of Gaoting Mountain, Hangzhou. Multifarious events, including read for the earth, lecture of geosciences, face-to-face consultation, initiative, quiz and billboard, were held to call upon the whole society to give more concern about lucid waters and lush mountains and natural resources, to promote conservation culture and jointly create a beautiful environment in Hangzhou.