Globe and Mail: The worlds top climate change scientists are now 95 per cent certain that humans are responsible for global warming. Thats the headline takeaway from the latest findings by the Intergovernmental Panel on Climate Change. Global temperatures are the hottest since the last ice age and the planet is only getting warmer. What to make of this news? On one hand, its likely not much of a surprise to most of us. Extreme weather events like superstorm Sandy are becoming more commonplace. Glaciers are melting,...