40th ISTANBUL International Conference on Green Chemistry & Sustainable Environmental Solutions (GCSES-25) scheduled on Aug. 28-29, 2025 Istanbul (Turkiye) is for the scientists, scholars, engineers and students from the Universities all around the world and the industry to present ongoing research activities, and hence to foster research relations between the Universities and the industry. This conference provides opportunities for the delegates to exchange new ideas and application experiences face to face, to establish business or research relations and to find global partners for future collaboration. The conference is sponsored by Universal Researchers (UAE).