LONDON, April 5 (Reuters) - The world is awash with money, yet spending nowhere near enough to prevent extreme climate change. As time runs out, urgent policy intervention is needed to make finance flow, the Intergovernmental Panel on Climate Change's latest report says. Such policy could include ending fossil fuels subsidies, tax breaks for clean power or energy-efficient buildings, or underwriting the development of low-carbon projects and technologies. "Climate policy and finance will be critical for driving transformative change," said Emma Cox, global climate leader at consultants PwC. The combined wisdom of 278 scientists and signed off by most of...