Rio+20 must make a measureable commitment to save our seas and oceans Stop floundering and show us your jaws, Marine Conservation Society tells Rio + 20 Ministers As Ministers from around the world congregate in Rio de Janeiro to make global commitments at the United Nations Conferences on Environment and Development, the Marine Conservation Society (MCS) is urging them to amend their draft text to make three key measureable commitments rather than the present empty promises.