Live Science: The ocean may soon begin to sound more like New York City to dolphins and whales. As carbon dioxide levels rise and make the world’s oceans warmer and more acidic, the increasing amounts of the gas could also make the seas noisier, especially in the soprano range, a new study suggests. The increased burning of fossils fuels such as coal and oil in the last few decades has injected more and more carbon dioxide into the Earth’s atmosphere. The oceans absorb a large chunk of this …