The top 3 emitters of greenhouse gases (GHGs) are iron and steel, cement, and petrochemical production
U.S. and global GHG emissions by industrial sector, as percentages of total emissions and in million metric tons of carbon dioxide equivalent
Stacked bar chart comparing U.S. and global GHG emissions by industrial sector, showing that iron and steel, cement, and petrochemical production produces the most emissions globally. In the United States alone, cement production produces the most emissions.