Associated Press: The world already knows that global warming is a serious problem and the time has come for politicians and experts to come together to map out a practical solution, former British Prime Minister Tony Blair said Friday. Urging the Group of Eight industrialized nations to stand behind his initiative, Blair said he gave Japanese Prime Minister Yasuo Fukuda, host of the G-8 meeting next month, a report by The Climate Group, a nonprofit organization Blair is part of, on how to forge a …