Guardian: On Friday, 195 governments around the world will accept a summary of the most comprehensive assessment of the basic science of climate change that has ever been written. The IPCC's report, which has been prepared by 259 researchers from 39 countries, will show even more clearly how human activities, primarily burning fossil fuels and deforestation, are creating a dangerous trend with immense risks for the lives and livelihoods of billions of people around the world from shifts in extreme weather,...