![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgF-n9QRhKWB2IAWOsemNuHsL8Fdv1S_iVr_6oQQhZaZ9tzlJzvdvitI5UnpWa9kahs1yJEjkuy0_iy015P4lzXqwoAg2DET7TomK4ue4ZZPdRvAMI7bbqAQCK-2EE43vu3sE3GWjN6o2vG/s400/323_oil_coal_gas_reserves.AF.600.jpg)
Black areas show loca tions of proven oil, coal, and gas reserves. The reserve amount is indicated as a red circle for oil and striped boxes for coal. Worldwide coal reserves amount to
three times oil reserves. Coal use is a major concern and factor in global warming scenarios.