On Tuesday, November 9, 2021, a celebration was held at the Environmental Research Center in the presence of the Director of the Center and the distinguished lecturers and affiliates of the Center on the occasion of the retirement of Dr. Sahar Ahmed Amin for reaching the legal age in honor and appreciation for her after a scientific journey that culminated in achieving many successes in the field of scientific research and various activities, wishing her a happy life and permanent success.