As pollution from burning fossil fuels continues to heat the atmosphere, the world's glaciers are melting at an accelerating rate. Scientists widely agree that this meltwater has been a major factor in raising global sea levels about seven inches over the 20th century. The movement of all that water is affecting the Earth's rotation, according to a study published Friday in the journal Science. "If you are melting glaciers from high latitudes--in Alaska, Greenland, or Iceland--you move mass away from the pole, toward the equator, which slows the Earth down," said Jerry Mitrovica, the study's lead author and a Harvard...