A man of the Embrea ethnic group sails on a boat in lake Gatun in the Ella Puru Embrea community, outskirts of Panama's capital Panama City, on June 4, 2013. The Embrea and Wounaan indigenous groups are related to the environment through a economy based on agriculture, hunting, fishing and gathering, and now a days with small surplus for trade. The General Assembly of the United Nations (UN), declared June 5 as the World Environment Day. [Photo: Xinhua]