Humanity must rescue oceans to rescue itself, UN warns The United Nations has warned that global warming is devastating oceans and Earth's frozen spaces in ways that directly threaten a large slice of humanity. A raft of impacts on sea and ice are decimating fish stocks, destroying renewable sources of fresh water, and incubating superstorms that will ravage some megacities every year, according to a landmark assessment approved by the 195-nation Intergovernmental Panel on Climate Change (IPCC).\\n IMAGES AND SOUNDBITES