Reuters: Britain said on Monday it would host a meeting of major economies next month ahead of talks to reach a new U.N deal to fight climate change. The United States had asked Britain to hold the meeting of the 17-member Major Economies Forum (MEF) it set up earlier this year to provide an informal forum to discuss climate issues in London on October 18 and 19. The discussions come less than two months before about 190 nations gather for talks in Copenhagen in December to forge a …