Agence France-Presse: An old man gently touches the trunk of the huge quiver tree with a worried look on his wrinkled face, as he points at several dead branches lying on Namibia’s rugged terrain. “When I was a boy, my grandfather made my first quiver from a branch of this old tree about seventy years ago, but I fear the tree is dying — too many dead branches. Things changed over the past few years, and these trees just die,” he tells AFP. Aaron Kairabeb works on a farm 200 kilometres (125 miles) …