As more space junk is falling to Earth uncontrolled, scientists are using seismometers to track the debris.
A magnitude 3.9 earthquake was measured near Norris Geyser Basin in Yellowstone National Park on Tuesday evening. It's the ...
An earthquake was detected off the coast of New Hampshire early Wednesday, the second quake to occur in the area this week, the U.S. Geological Survey reported. A 3.8-magnitude earthquake was reported ...