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.
Photo: Daniel Foster/Flickr. Critics of the natural gas extraction technique known as fracking have long criticized it for leaking too much methane â a potent greenhouse gas â into the atmosphere during the extraction process.he Environmental Protection Agency recently estimated that natural gas operations emitted about 145 million metric tons of methane in 2011, making it the biggest source of these emissions in the country.