Lester Brown, Earth Policy Institute & Dr. Brenda Ekwurzel, Union of Concerned Scientists join Thom Hartmann. The warming of the climate is unequivocal. That's one of the major findings of a new report put out by the United Nation's International Panel on Climate Change. The report - released every six years - is the most comprehensive report on climate change and global warming. This year's report - worked on by over 800 authors from dozens of countries - won't be released in full until Monday - but the summary for policymakers was released earlier today - and it highlights the report's key findings. Among them - man-made climate change is near certain - and climate change is already effecting extreme and severe weather events across the globe.