Colombia is a global leader in climate activism. Could US influence drag country to a future of mining and fracking? Several hours after dark in a quiet Caribbean neighbourhood, a cluster of environmental activists gather on plastic chairs between a mango tree and a courtyard wall emblazoned with the words: “Colombia, respira!” (breathe Colombia). So many people have turned up that some are forced to stand. That is because tonight’s speaker, Susana Muhamad, is one of the most admired socio-envir