Bachelor of Science in Biology, Department of Biology Education, Faculty of Mathematics and Science, UNY again showed its work internationally. One of the Bachelor of Science in Biology lecturers got trust to become a Visiting Scholar to the Faculty of Science Technology and Agriculture of Yala Rajabhat University, which is one of the well-known tertiary institutions in Thailand, Dr. Tien Aminatun who was invited to the Visiting Scholar this time. In the activities carried out on October 20-26 2019, Tien was asked to give a guest lecture for a PhD program with 3 topics, namely Environmental Issues, Natural Resources and Environmental Management, also for bachelor program students with the topic Pollution and Principle of 3R. The Dean of the Faculty of Science Technology and Agriculture Yala Rajabhat University, Asst.Prof.Dr.Lilla Adulyasas in his capacity representing the Chairperson of Yala Rajabhat University said that the Visiting Scholar activity was very important as a form of Yala Rajabhat University's seriousness in an effort to strengthen collaboration with UNY.