HAVANA -- Developing nations on Saturday declared September 16 the annual "Day of Science, Technology and Innovation in the South" as they prepared to wrap up a two-day summit on the subject. Brazil's President Luiz Inacio Lula da Silva, chats next to Brazil's Foreign Minister Mauro Vieira prior to his speech at the G77+ China summit in Havana, Cuba, September 16, 2023. Photo: ReutersUN Secretary-General Antonio Guterres speaks at the opening ceremony of the G77+China summit in Havana, Cuba, September 15, 2023. At the same time, it calls for more cooperation between member nations in science, technology and innovation as strategies for their development. UN Secretary-General Antonio Guterres, Cuban President Miguel Diaz-Canel and Cuban former President Raul Castro pose for a family photo with other leaders attending the G77+China summit in Havana, Cuba, September 15, 2023.