Reuters: Turning the tide on global warming should be tackled by big and small steps that range from cutting subsidies to riding bicycles, International Monetary Fund managing director Christine Lagarde said on Friday. "Removing fossil fuel subsidies would go a long way to cutting consumption," Lagarde said in answer to a question at Massachusetts Institute of Technology about how climate change can be addressed. She had delivered a speech on how to promote growth in the face of an aging population and...