DOE Boss Sounds New Warning on Carbon Emissions

Carbon emissions in Iran rose drastically between 1990 and 2012, increasing from 283 million tons to 730 million tons.
Isa Kalantari, head of the Department of Environment, revealed the disturbing figure at a panel on "Renewables Development Challenges" in Tehran on Tuesday. 
Based on DOE statistics, natural gas is the leading contributor to carbon emissions followed by oil, gas flaring and cement production.