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In 2010, a massive, magnitude-8.8 earthquake struck the south central coast of Chile, rupturing beaches and launching a tsunami that rode inland with devastating effect. In an instant, whole sections of the coastline were transformed, with large swaths of sand and rock lifted from beneath the waves.

When you dive into the frigid waters of the Pacific Ocean off the coast of southern California, the first thing you notice is the silence. Other than the bitter cold

(PhysOrg.com) -- When trying to focus sound waves into as small an area as possible, scientists run into a fundamental limit called the diffraction limit. That is, when sound waves are focused into a region smaller than one wavelength, the waves begin to bend and spread out.

* Waves brush U.S., Mexico after thousands evacuated * Floods in parts of Latin America, little major damage [More]