Ahmed Zewail was an Egyptian-American scientist and Nobel laureate in Chemistry known for his groundbreaking work in femtochemistry. Born in 1946 in Egypt, Zewail earned his PhD from the University of Pennsylvania and conducted research at Caltech. His development of ultrafast laser techniques allowed him to observe chemical reactions at the femtosecond timescale, revolutionizing the field of physical chemistry. In 1999, Zewail was awarded the Nobel Prize for his contributions to the understanding of molecular dynamics. He was also a passionate advocate for science education and international collaboration. Ahmed Zewail passed away in 2016, leaving behind a legacy of innovation and discovery.