Associated Press: The head of Eurostar, the high-speed rail service linking London to Paris and Brussels, said Friday that climate change worries helped make 2007 a banner year and urged the EU to rein in the “unsustainable” growth of airline carbon emissions. “We see a 30 percent growth in the number of business travelers on the Eurostar in the last two years,” Richard Brown, Eurostar’s chief executive, told a climate change conference of European business leaders. “A …