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.
The U.S. Food and Agriculture Organization says that agricultural methane output could increase by 60 percent by 2030 [Source: Times Online ]. The world's 1.5 billion cows and billions of other grazing animals emit dozens of polluting gases, including lots of methane. Two-thirds of all ammonia comes from cows. Cows emit a massive amount of methane through belching, with a lesser amount through flatulence. Statistics vary regarding how much methane the average dairy cow expels.