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The International Year of Light and Light-based Technologies or International Year of Light IYL was a United Nations observance that aimed to raise awareness of the achievements of light science and its applications, and its importance to humankind. Under the leadership of UNESCO , the IYL brought together hundreds of national and international partners to organize more than 13, activities in countries. The audience reached by the IYL is estimated to be over million. An item that was discussed at this meeting was how to follow up activities that were planned to celebrate the 50th anniversary of the laser LaserFest in with something even more ambitious. The photonics community felt that there was a real opportunity to reach out beyond the scientific sector to raise much broader awareness of the problem-solving potential of light-based science in so many areas of life, and to make a global effort to influence education and policy in both developed and developing countries. International Years are part of the United Nations UN declared observances that promote awareness of issues relevant to its aims and international programmes.
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November 2, The mutually beneficial relationship between algae and modern corals—which provides algae with shelter, gives coral reefs their colors and supplies both organisms with nutrients—began more than million years ago, according to a new study by an international team of scientists including researchers from Princeton University. That this symbiotic relationship arose during a time of massive worldwide coral-reef expansion suggests that the interconnection of algae and coral is crucial for the health of coral reefs, which provide habitat for roughly one-fourth of all marine life. Reefs are threatened by a trend in ocean warming that has caused corals to expel algae and turn white, a process called coral bleaching. Published in the journal Science Advances , the study found strong evidence of this coral-algae relationship in fossilized coral skeletons dating back more than million years to the late Triassic period, a time when the first dinosaurs appeared and Earth's continents were a single land mass known as Pangea. Although symbiosis is recognized to be important for the success of today's reefs, it was less clear that that was the case with ancient corals. In addition to confirming that symbiosis dates back to the Triassic, the study found that the corals inhabited nutrient-poor marine environments—not unlike today's subtropical waters—where algae-coral symbiosis played a major role in driving reef development.
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Loud rumbling, lightning, heavy ashfall were observed; power cuts reported. Egyptian authorities have impounded a massive cargo vessel that blocked the Suez Canal last month amid a financial dispute with its owner. Russian opposition leader Alexei Navalny says he is suing the prison where he is serving time outside Moscow for access to the Quran.
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