Dignitaries and royals raise ecological awareness
Updated: 2014-04-23 08:39
Earth Day take place annually on April 22, with events held worldwide to demonstrate support for environmental protection. It was first celebrated in 1970 and is now marked in more than 192 countries. World dignitaries and royal family members set an example for people to raise ecological awareness.
US President Barack Obama uses a pickaxe as he plants a tree at a national service project at Kenilworth Aquatic Garden in Washington, in this April 21, 2009 file photo. [Photo/icpress.cn]