-Editorial- BOGOTÁ — Colombia’s more than half-century old civil war has been, if nothing else, an environmental calamity. Besides causing tens of thousands of deaths and forcing millions from their homes, the protracted fighting between state forces, left-wing guerrilla forces and right-wing gangs has led to massive amounts of crude oil being poured into the country’s rivers, streams and wetlands. Data released by the oil industry suggests that over the past 30 years, some 4 million barrels of crude have been dumped in Colombia. That’s 10 times the amount the infamous Exxon Valdez tanker released off the coast of Alaska […]