A new study indicates that changes in population growth and composition could significantly affect global emissions of carbon dioxide over the next 40 years. Authors of the study include National Center for Atmospheric Research (NCAR) scientist Brian O'Neill and International Institute for Applie... Show moreA new study indicates that changes in population growth and composition could significantly affect global emissions of carbon dioxide over the next 40 years. Authors of the study include National Center for Atmospheric Research (NCAR) scientist Brian O'Neill and International Institute for Applied Systems Analysis (IIASA) scientist Shonali Pachauri. Show less