describe a person who has done a lot of work to help people you should say who this person is/was where this person lives/lived what he/she has done to help people and explain how you know about this person

I would like to talk about a remarkable scientist named Dr. Shafi. He was a renowned professor and scientist who did a lot of things. Dr. Shafi lived in Tehran for many years. He was born and grew up in Tehran, where he trained many students who became famous pharmacists. Dr. Shafi developed new medicine [...]