28 elephants killed: Poachers killed them
   Carcasses of elephants slaughtered by poachers in Boubou Ndjida National Park, Cameroon, Feb. 16, 2012   YAOUNDE  — Poachers have killed 28  endangered forest elephants in the Nki and Lobeke national parks in  southeast Cameroon in recent weeks, the conservation organization WWF  said on Wednesday.   With demand for ivory rising from Asia, poachers have reduced the  population of Africa's forest elephants by 62 percent over the last  decade, putting the species on track for extinction, conservationists  say.   The parks of southeast Cameroon, along with parts of the Democratic  Republic of Congo and Gabon, have some of the last significant  populations of forest elephants.   "Elephants in these two protected areas in the Congo Basin are facing a  threat to their existence," said Zacharie Nzooh, WWF Cameroon  representative in the East Region.   Nzooh said that between Feb. 10 and March 1, WWF found the carcasses of  23 elephants, stripped of their tusks, deep in the Nk...