Inside Science News: As the world's oceans absorb increasing amounts of human-generated carbon dioxide from the atmosphere, they will become both more acidic and noisier, according to researchers with the Monterey Bay Aquarium Research Institute in Moss Landing, California. Their study, published recently in the journal Geophysical Research Letters, says the noise increase will correspond to underwater sound actually traveling up to 70 percent farther in the more acidic seawater by 2050.