It's a climate puzzle that has vexed scientists for more than a decade and added fuel to the arguments of those who insist man-made global warming is a myth.
Since just before the start of the 21st century, the Earth's average global surface temperature has failed to rise despite soaring levels of heat-trapping greenhouse gases and years of dire warnings from environmental advocates.
Ron Fournier - Senior Political Columnist and Editorial Director for the National Journal
Muna Karki - Owner Howard Discount Liquors
Dana Perino - Currently Co-Host of Fox News 'The Five' & Former White House Press Secretary
The BoDeans Band