In Past Tsunamis, Tantalizing Clues to Future Ones
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Undersea quakes are inevitable. The questions are where and when Â and the recent catastrophe may provide clues.
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The United States is moving on several fronts toward a global tsunami warning system following the Asian catastrophe.
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Aerial images of tsunami-battered coastlines suggest the world map may be changed forever, with chunks of land sinking into the sea. But did the quake and the killer wave it spawned really significantly reshape the Indian Ocean's outline? Scientists say probably not.
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Scientists say they understand more about how cholera - a threat after Asia's tsunami - spreads.
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An Israeli company plans to distribute free to Asian countries hit by last week's tsunami a device that uses land and water sensors to measure seismic activity and wave motion that could indicate tsunamis.
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Signs grew on Thursday that towns and villages on the battered shores of the Indian Ocean were beginning to recover from the tsunami which all but swept them off the map.
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Along the shores of Sri Lanka, the tsunami that has killed more than 140,000 people first appeared as a rapidly rising tide -- a phenomenon more akin to a quickly filling bathtub than a bona fide wave.
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Witness accounts from people who saw the huge waves triggered by an earthquake off the Indonesian coast.
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A computer model that can predict the impact of a tsunami from the San Francisco Bay area to Alaska is helping scientists plot danger zones in coastal cities to guide emergency planning.
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IT COULD HAPPEN HERE: Tsunami scientists and public safety officials say the West Coast could experience a calamity similar to the one in southern Asia.
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It sounds insignificant alongside the Indian Ocean tsunami, yet an almost imperceptible annual rise in the world's oceans may pose a huge threat to ports, coasts and islands by 2100.
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The northern end of the Bay of Bengal could be at risk of giant earthquakes and tsunamis in the coming decades, scientists say.
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The tsunami that took a heavy toll in human life also battered Indian Ocean coral reefs that already were in distress from pollution and global warming, possibly causing damage that will require decades to recover, experts say.
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Scientists predict killer tsunamis could strike the Caribbean, which lacks a warning system even though its seabed is gouged by some of the world's deepest trenches, where the giant waves can be generated by tectonic activity, and its low-lying islands are heavily populated along their coastlines.
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The human impact of the tsunami disaster in sound and pictures.
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Islanders on tiny Tuvalu in the South Pacific last week saw the future of global warming and rising sea levels, as extreme high tides caused waves to crash over crumbling sea-walls and flood their homes.
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New research suggests that the Âgreat dyingÂ 251 million years ago was followed by an explosion of complexity in marine life that has persisted ever since.