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Clashes between adherents of these ideas have gone on since time immemorial (see [[origins debate]]).

Clashes between adherents of these ideas have gone on since time immemorial (see [[origins debate]]).

Within the [[solar system]], Earth is the third planet from the Sun. It is approximately 8,000 miles (13,000 km) in diameter, which means that its equatorial circumference (measured around the equator) is 24,901 miles (40,075 kilometers), and the polar circumference is slightly less at 24,809 miles (40,008 km).[http://geography.about.com/library/faq/blqzcircumference.htm] The reason its metric circumference is so close to the "round number" of 40,000 is that the [[kilometer]] was defined (by the French) as 1/10,000th the distance from the equator to the [[North Pole]].  

Within the [[solar system]], Earth is the third planet from the Sun. It is approximately 8,000 miles (13,000 km) in diameter, which means that its equatorial circumference (measured around the equator) is 24,901 miles (40,075 kilometers), and the polar circumference is slightly less at 24,809 miles (40,008 km).[http://geography.about.com/library/faq/blqzcircumference.htm] The reason its metric circumference is so close to the "round number" of 40,000 is that the [[kilometer]] was defined (by the French) as 1/10,000th the distance from the equator to the [[North Pole]].