Primary school students in Xinghua City, Jiangsu Province, participate in an environmental protection-themed painting activity yesterday to mark World Environment Day, which falls on today. Across the country, various activities are being carried out to encourage the public to contribute to the construction of a beautiful China. World Environment Day is the biggest international day for the environment. Led by the United Nations Environment Programme and held annually since 1973, it has grown to be the largest global platform for environmental outreach and is celebrated by millions of people worldwide.Xinhua