Leading economists have concluded that in an effort to meet the world’s agreed-upon climate goals in the most cost-effective way possible while still fostering growth, countries must set a strong carbon price, with an aim to reach $40 to $80 per tonne of CO2 by 2020 and $50 to $100 per tonne by 2030. A group of 13 of the world’s leading economists from nine developing and developed countries were convened as part of a