
Egyptian mourners carry the coffin of Nobel prize-winning Egyptian-American chemist Ahmed Zewail during the last part of his funeral procession at a cemetery on August 7, 2016 in Cairo's Sixth of October suburb. Zewail, who served as a science and technology advisor to US President Barack Obama, died on August 2, 2016 in the United States at the age of 70. / AFP PHOTO / STRSTR/AFP/Getty Images


