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Scientists reconstruct sea level changes on expedition

For more than 35 million years, the waxing and waning of polar ice sheets is thought to have caused alternate falls and rises of sea level of as much as several hundred feet, and in places, shifts in coastlines by hundreds of miles, according to a spokesperson. In recent geological times, the end of the last Ice Age saw the melting of vast glaciers across North America, and between 19,000 and 6,000 years ago a rise in sea level of about 400 feet to its present position.

The Ocean Drilling Program was to begin an expedition on June 21 to collect sediment and rock samples below the ocean floor about 80 miles east of Atlantic City, New Jersey. Scientists will drill several holes as much as ...

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