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 ...

Hidden in the Pacific, two very different volcanoes are forcing scientists to rethink what counts as “biggest.” Tamu Massif, ...

The largest active volcano in Oregon is being drilled into as part of an effort to create a cleaner energy source. Engineers are building a geothermal power plant that taps into the energy of the ...