Agriculturist Ahasan Ullah Khan, he is also known as Entomologist. He obtained his Bachelor of Science in Agriculture (Honours) from Sylhet Agricultural University, Sylhet in 2016. He received his Master of Science in Entomology from Sylhet Agricultural University, Sylhet, Bangladesh in 2018. He has published 43 peer-reviewed scientific papers in national journals and international journals. Mr. Khan has presented six (8) oral presentations at home and abroad conferences. At present, he has been working on COVID-19, medicinal plants, and environmental factors that affect human life.