A potentially explosive underwater volcano in the Pacific is showing alarming signs of activity. With pressure building and unusual tremors detected, scientists are on high alert. This underwater ...

Add Yahoo as a preferred source to see more of our stories on Google. When you think of the United States, images of sprawling cities and vast landscapes might come to mind, but not the hidden and ...

Scientists say the Kikai volcano near Japan is slowly filling with magma again after thousands of years. The underwater ...