(f) Develop joint programmes for training scientific and technological cadres, including the training and further training of skilled manpower; (g) Promote exchanges of researchers and specialists among Member States in order to make full use of the technical skills available within the Community; and (h) Revise the educational systems in order to better educational, scientific and technical training to the specific developmental needs of the African environment. Article 52 Scientific Research and Technological Programmes Member States shall take all necessary measures to prepare and implement joint scientific research and technological development programmes. Article 53 Protocol on Science and Technology For the purposes of Articles 51 and 52 of this Treaty, Member States agree to cooperate in accordance with the provisions of the Protocol on Science and Technology. Article 54 Energy and Natural Resources 1. Member States shall coordinate and harmonize their policies and programmes in the field of energy and natural resources. 2. To this end, they shall: (a) Ensure the effective development of the continent's energy and natural resources; (b) Establish appropriate co-operation mechanisms with a view to ensuring a regular supply of hydrocarbons; (c) Promote the development of new and renewable energy in the framework of the policy of diversification of sources of energy; (d) Harmonize their national energy development plans; 38