Indo-Asian News Service: Many of giraffe, rhino and elephant species, along with a multitude of rodents, bush pigs, horses, antelope and apes, once roamed northern Pakistan. But climate change eight million years ago radically altered the vegetative profile, resulting in the extinction of most species, when they could not adapt to the new ecosystem, said a long-term study of mammal fossils spanning a five-million-year period. Michigan University paleoecologist Catherine Badgley said: “The climate is …