The BBC have a number of very interesting stories on their news website relating to Central and South America, with three out of four of them related to legal and illegal gold mining:
NICARAGUA: How rainwater harvesting is helping Nicaraguan farmers... The construction of small earth dams to collect and store rainwater in the wet season is having significant benefits to crop-growers.
GUYANA: How Guyana gold mining threatens its green future... the conflicting prioritisation between economic growth and environmental protection.
PERU: Peru protests at huge Conga gold mine in Cajamarca... Concerns over water and envionmental pollution lead to protests in Peru over potentially lucrative gold mining, despite assurances by the company that they will meet strict environmental procedures and construct modern sustainable reservoirs for local communities.
COLUMBIA: Illegal gold rush sees Colombia's drug barons cash in... The high price of golf means armed drugs gangs are trying to influence and develop illegal mines in Columbia.