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| | Covering about 70% of the earth's surface, the oceans are a highly productive system which continuously recycles chemicals, nutrients and water through the 'hydrological cycle', which powers climate and weather, and which regulates global temperature by acting as a giant heat reservoir from the sun. The oceans contain a rich array of plant and animal life. About two-thirds of the world's population live within 60 kilometres of the coast, and almost half of the world's cities with more than one million people are sited in and around the tide-washed river mouths known as estuaries. From a human point of view, oceans are also a major source of food and employment, and provide natural routes for communication, transportation and trade. |  | | Photo credit: Image courtesy of NOAA | | | | The About section was sourced from Man and the Ocean, a product of the Russian Head Department of Navigation and Oceanography (HDNO), and from the National Oceanic and Atmospheric Administration (NOAA), both foundation partners of the UN Atlas of the Oceans. It is now managed by the UN-Oceans agencies. | | | | |
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| New study reveals glaciers' secrets
by Eastley, T., ABC News Online. AM 23 September 2009 |  |
| | A study published in the journal Nature has revealed the extent of the thinning of ice sheets in Greenland and the Antarctic and how a rise in sea level has previously been underestimated by scientists. | |
Read more at http://www.abc.net.au/am/content/2009/s2694856.htm.
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