The year 2021 was particularly rich in symbols and fruitful for the CSRS, its partners and the beneficiaries of its action-research work. It was the year to celebrate the 70th anniversary of the existence of the CSRS, 70 years of research in partnership for sustainable development in Côte d'Ivoire and in the sub-region. With all of you, the party was beautiful and rewarding. Throughout the year, it was marked by the organization of several scientific and non-scientific events, often located in partner structures or in beneficiary communities, to demonstrate the contribution of scientific research to the positive transformation of African society, to multiply mutual learning platforms for change, and to inspire multifaceted collaborations for research and intervention.