By Valentín DÌAZ The once bright green Andean forest where Maria Yadira Jimenez worked as a tour guide has been reduced to ashes. Since Monday, forest fires have been advancing on Nemocon, a rural area with beautiful landscapes about 60 kilometers (37 miles) outside the Colombian capital Bogota. Though usually cool, the mountains surrounding the town have become a hellscape, with the blazes driving out residents and wildlife. Distraught, Jimenez joined volunteers who — along […]