A North Atlantic current flowing into the Arctic Ocean is warmer than for at least 2,000 years in a sign that global warming is likely to bring ice-free seas around the North Pole in summers, a study showed. Scientists said that waters at the northern end of the Gulf Stream, between Greenland and the Norwegian

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A study carried out by researchers from the University of Twente, the Netherlands, provides a comprehensive account of the global green, blue and grey water footprints of different sorts of farm animals and animal products, distinguishing between different production systems and considering the conditions in all countries of the world separately. Some of the main

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