A man sits on the edge of the almost empty water reservoir of La Mariposa in Caracas, November 4, 2009. Venezuela's government has called for water conservation, saying low rainfall caused by the El Nino weather phenomenon meant water levels were critically low in the country's dams. Reuters Pictures 1 month ago

A man sits on the edge of the almost empty water reservoir of La Mariposa in Caracas, November 4, 2009. Venezuela's government has called for water conservation, saying low rainfall caused by the El Nino weather phenomenon meant water levels were critically low in the country's dams.