Anne Chao from National Tsing Hua University visited the lab last week to meet with students and staff and to present the weekly departmental seminar. Anne is well known for her extensive and rigorous contributions to ecological statistics and biodiversity estimation (including the Chao1 and Chao2 indices). Anne’s seminar was very well received, and our discussions with her stimulated new ideas for developing our own work on estimating undetected extinctions.