On July 3, 2026, the Department of Microbiology—alongside Anna University's Institute of Ocean Management and Arivukkan Science Magazine—celebrated International Plastic Bag Free Day at Madhavaram Botanical Garden under the theme "Reduce – Reuse – Recycle." The event featured an awareness session on single-use plastics, an Environmental Protection Pledge, and a garden cleanliness drive to collect plastic waste, successfully promoting sustainable practices and eco-friendly habits among participants.