In praise of CO2With less heat and less carbon dioxide, the planet could become less hospitable and less green Lawrence Solomon Financial Post, Don Mills, Ontario Saturday, June 07, 2008 Planet Earth is on a roll! GPP is way up. NPP is way up. To the surprise of those who have been bearish on the planet, the data shows global production has been steadily climbing to record levels, ones not seen since these measurements began.GPP is Gross Primary Production, a measure of the daily output of the global biosphere –the amount of new plant matter on land. NPP is...