LONDON – A comprehensive report on the global economic cost of climate change, to be released by the British government on Monday, is expected to be the world's most serious effort to quantify the long-term effect of doing nothing. The Independent newspaper reported Friday that the long-awaited review would say global warming could cost the world's economies up to 20 percent of their gross domestic product if urgent action is not taken to stop floods, storms and natural catastrophes. Sir Nicholas Stern, the report's author, met privately with Prime Minister Tony Blair and his Cabinet ministers on Thursday to brief...