Environmental protection exhibitions were held and environmental pamphlets handed out, on April 22 in Lhasa, capital of China's Tibet Autonomous Region, to mark the 33rd World Earth Day.
An official with the regional environmental protection bureau said that Tibet, where many rivers in Asia originate, is one of the cleanest areas in the world and that it is everyone's duty to protect it from ecologic deterioration.
Nationwide, China launched a campaign on April 22, World Earth Day, to increase public awareness of the importance of environmental protection.
More than 2,000 residents in Chengdu, capital of southwest China's Sichuan Province, attended a seminar on environmental protection.
In downtown Beijing, geologists and many other experts briefed local residents on mineral resources, and geological disasters as well as environmental protection.
World Earth Day originated in the United States 32 years ago, with the aim of raising global awareness of environmental issues. On April 22, 1990, more than 200 million people in over 140 countries and regions participated in World Earth Day activities.
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