The Faculty of Science in cooperation with the Faculty of Engineering at Beirut Arab University in Tripoli Campus organized a world day entitled "Earth Day Pollution and Solutions". The ceremony was attended by the BAU Vice-President for Tripoli Campus affairs Prof. Khaled Baghdady, the Deputy Secretary General for Tripoli Campus Mr. Mohamed Hammoud, Director of the Faculty of Engineering Dr. Ahmad Lakkani, Director of the Faculty of Science Prof. Mohammad Jayyar, other directors and professors of all faculties, and a group of students. Dr. Jalal Halwani, Director of Water and Environmental Science Laboratories and Head of Health and Environment at the Lebanese University, conducted a presentation on the steps taken to preserve the Palm Islands Reserve in Tripoli from pollution. Dr. Safaa Baydoun from Beirut Arab University and Director of Center for Environmental Research and Development - Bekaa Campus, highlighted the current challenges facing natural resources in the Bekaa region of Lebanon. After that, Dr. Rami Owayni of the Faculty of Science presented innovative environmental techniques. A lecture on the desalination system was presented by Dr. Yasser Al Samdouni from the Faculty of Engineering, then followed by Dr. Mohamed Al Jawhary from the Faculty of Engineering who presented a lecture on solid waste management system. The students, Ryan Farha and Sarah Moubeid, from the Faculty of Science, concluded with a research about the factors that are leading to the increase in the number of adolescents, in northern Lebanon, smoking what is called ‘’Nargileh’’. This day was marked by an exhibition of students’ projects and ended up by distributing honor shields to lecturers and awards for successful projects.