BOUGAINVILLE, Papua New Guinea — The climate is changing, science shows. And according to some estimates, it could create anywhere between 200 million and 1.2 billion climate refugees by 2050. As people flee floods, failed harvests, dried rivers or destroyed homes, what becomes of the ecosystems they leave behind? Of the wildlife, trees and endemic … Continue reading In a Noah’s Ark move, PNG migrants bring thousands of trees to safer ground