Dema Faham (C), the wife of Nobel prize-winning Egyptian-American chemist Ahmed Zewail, mourns during the second part of his funeral procession at the Zewail City of Science and Technology in Cairo on August 7, 2016. Nobel prize-winning chemist Ahmed Zewail received a funeral with military honours attended by Egypt's president and top state officials Sunday in Cairo. Zewail, who served as a science and technology advisor to US President Barack Obama, died Tuesday in the United States. He was 70. / AFP PHOTO / KHALED DESOUKIKHALED DESOUKI/AFP/Getty Images
