The Sawyer Seminar series concludes with a lecture from Hany El-Banna at 4 p.m. on Thursday, April 17, in Cowles Auditorium. El-Banna is the co-founder and president of Islamic Relief, the largest Western-based international Muslim relief and development NGO. Islamic Relief aims to provide rapid relief in the event of human and natural disasters and to establish local development projects to eradicate poverty, illiteracy and disease. El-Banna will talk about "The Global Role of Muslims in Humanitarian Aid."