NBC: Six years ago, the inconvenient truth surrounding human-caused climate change was edgy enough to earn a Nobel Prize for Al Gore and the Intergovernmental Panel on Climate Change but the IPCC's upcoming re-assessment of our climatic future is far less likely to shake up the planet. Instead, the next chapter of the climate saga is shaping up as a long exposition, driven by economics rather than politics or science. "The core scientific understanding has been in place for decades," says Roger Pielke...