The Earth's inner core is the Earth's innermost part and according to seismological studies, it is primarily a solid ball with a radius of about 1220 kilometers, or 760 miles (about 70% of the Moon 's radius).
AGA Stoves must be installed as they require a flue or a chimney. No extractor fan is needed, as cooking smells from the ovens go straight out that flue. As of 2010, you can purchase AGA Stoves that run on electricity, diesel, natural or propane gas; you can also get dual-fuel versions.
AGA is also active in technical committee activities supporting the standards, and is organizing natural gas utility participation in the standards process. AGA Viewpoint. Standards activities at ASHRAE can represent critical threats and opportunities for the competitiveness of natural gas as an end-use fuel.