From tigers and leopards to bears, otters and deer, North Korea’s forests are falling silent. Almost every large mammal is being hunted to the edge of eradication in a collapse driven by economic desperation, black markets and state-backed exploitation, new research warns.The study, co-authored by the British conservationist Joshua Elves-Powell and published in Biological Conservation in August, paints a grim picture of rapid ecological decline in a country with some of East Asia’s richest and...