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The U.S. Geological Survey reports the tremor's magnitude was 6.9 and was centered very deep in the earth.

The plan to draw drinking water from deep beneath the earth’s surface is based on a traditional premise - that water from far underground is…

The magnitude 7.5 earthquake hit late Friday night, but warnings were canceled after it appeared the tsunami no longer posed a threat.

After the 1917 Russian Revolution, there was a debate over what to do with the spectacular jewels that had symbolized the power and wealth of the czars. Most have remained in the Kremlin, but some can't be traced.

No injuries are reported, but the U.S. Geological Survey says people felt the shaking as far south as Atlanta, Ga. and as far north as Cincinnati, Ohio.

A huge, magnitude-8.7 earthquake in April produced stronger ground shaking than any earthquake ever recorded, and surprised seismologists by triggering more than a dozen moderate earthquakes around the world. One seismologist thinks we're witnessing the gradual evolution of a new boundary between tectonic plates.

Scientists are finding a large increase in the number of small earthquakes in the midcontinent of the U.S. They suspect wastewater wells, whose numbers are growing as the oil and gas industry increases hydrofracturing.

While a powerful temblor near Sumatra has led to a "tsunami watch" for the entire Indian Ocean, so far only a minor wave has been generated.

A huge earthquake shook the ocean floor off the coast of Indonesia Wednesday. Early measurements by the U.S. Geological Survey give it a strength of 8.7. Surrounding nations have issued tsunami warnings.

The quake was centered 120 miles east of Acapulco.