Mueren 4 soldados colombianos en ataque de las FARC

TO GO WITH AFP STORY on illegal mining in Colombia Black Hawk helicopters of the Colombian Army lift off during Operation Anostomus, an offensive against illegal mining launched by the Colombian government in the jungles of the departments of Guainia and Vichada, at a military base in Barrancominas, Guainia, on May 4, 2015. Illegal mining activities take place mostly in areas of environmental conservation as moors, rivers and forests, and produce ecosystem pollution, loss of animals' habitats and displacement of native communities -- areas which are mostly controlled by armed groups, guerrillas and criminal gangs. In Colombia, one of the countries with the largest biodiversity in the world, minerals such as gold, coal, nickel and tungsten are exploited by illegal mining which uses chemical products such as mercury inappropriately, causing pollution in watersheds. AFP PHOTO / LUIS ACOSTA (Photo credit should read LUIS ACOSTA/AFP/Getty Images)