凯伦 • 霍夫曼，美国费城的自由撰稿人。她的作品刊载在英国《卫报》，《地球岛》杂志，《生态学人》等媒体。关注她的推特：@karhoff

Karen Hoffmann is a freelance journalist based in Philadelphia whose work has appeared in The Guardian, Earth Island Journal, and The Ecologist. Follow her on Twitter at @karhoff.