JAKARTA -- A vast tree plantation run by Japanese trading house Marubeni in the mountains of southern Sumatra has grown beyond its main purpose of pulp production to become a testing ground for efforts to reduce and capture carbon emissions.
Roughly 287,000 hectares -- bigger than the size of Tokyo --- of Eucalyptus pellita trees extend as far as the eye can see from the top of one of the area's 40-odd fire lookout towers.








