ANSWER: 10th Nov
Explanation:
World Science Day for Peace and Development, known as World Science Day was observed on November 10th 2015 across the globe. The theme of this day was Science for a Sustainable Future and to mark this day, UNESCO held several special campaigns and visits to museums for school children. Theme for this day was chosen against the 2030 Agenda for Sustainable Development approved by the UN. This day was created as a follow up to the World Conference on Science in 1999.
