Reuters: Developing countries could in future earn money from reducing carbon emissions by protecting oceans and marine ecosystems, a top U.N. official said on Thursday. Sea grasses, mangroves and salt marshes naturally store huge amounts of carbon but this is released as greenhouse gases, such as carbon dioxide, when wetlands are drained or disturbed. The head of the United Nations Environment Programme (UNEP), Achim Steiner, said a combination of public and private funds could be used …