Leading coral reef experts are meeting today, 16 December 2004, at the Zoological Society of London to discuss the alarming rates of decline and formulate an action plan to prevent the demise of these important ecosystems. With approximately 20% of coral reefs already destroyed, it is thought that close to 50% may be close to collapse.
Coral reefs are critically important for the goods and services they provide to millions of people, with a global value estimated at $375 billion per year. Research presented at the symposium shows that not enough money and effort are being put into this important economic and environmental asset.
“Coral reefs provide a source of food and income, act as natural coastal defences and support a huge tourist industry which is of particular importance in developing countries,” said Dr Isabelle Côté, a co-organiser of the conference from the University of East Anglia. “The conservation of these reefs is vital not just because of their obvious beauty and biological significance, but because they have a huge economic value too.”
Annie Ogden | alfa
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Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.
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An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.
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A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.
Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...
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