Powerful undersea quake hits south Philippines, no damage

A powerful earthquake with a magnitude of 7.2 struck under the Celebes Sea off the southern Philippines on Tuesday but was far too deep to cause any damage and casualties or generate a tsunami.

Seismic 'CT scans' reveal deep earth dynamics

A new look 100 miles beneath a massive tectonic plate as it dives under North America has helped clarify the subduction process that generates earthquakes, volcanoes and the rise of the Cascade Range in the Pacific Northwest.

New study upends a theory of how Earth's mantle flows

A new study carried out on the floor of Pacific Ocean provides the most detailed view yet of how the earth's mantle flows beneath the ocean's tectonic plates. The findings, published in the journal Nature, appear to upend ...

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