Telegraph: The project, begun in 2005, was meant to involve nations from Senegal on the Atlantic ocean to Djibouti on the Red sea. But four years later, the "green wall" has barely emerged from the dust, and its supporters are hoping it will get a boost at the Copenhagen conference on climate change next month. "Africa won’t go empty-handed to the Copenhagen summit," vowed Senegal’s environment minister, Djibo Ka, at a ceremony in the northern village of Labgar recently. He said …