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The '''age of the Earth''' has been a matter of interest to humans for millennia, and today still causes debate, particularly between [[young Earth Creationism|young-Earth creationists]] who hold to a date of 6,000 years or so, and [[uniformitarianism|uniformitarians]] who hold to a date of about 4.5 billion years.

The '''age of the Earth''' has been a matter of interest to humans for millennia, and today still causes debate, particularly between [[young Earth Creationism|young-Earth creationists]] who hold to a date of 6,000 years or so, and [[uniformitarianism|uniformitarians]] who hold to a date of about 4,500 million years.

== Increasing ages ==

== Increasing ages ==

The 1911 edition of the [[Encyclopedia Britannica]] discussed dates up to 500 million years.<ref>Encyclopædia Britannica, pp 650-651.</ref>

The 1911 edition of the [[Encyclopedia Britannica]] discussed dates up to 500 million years.<ref>Encyclopædia Britannica, pp 650-651.</ref>

By about 1930, J. H. Jeans was arguing for an age of the Earth of around 2 billion years.<ref>Universal History of the World, p.76.</ref>

By about 1930, J. H. Jeans was arguing for an age of the Earth of around 2,000 million years.<ref>Universal History of the World, p.76.</ref>

The currently-proposed age is 4.5 billion years, based in part on rocks dated by [[Potassium-argon dating|Potassium-argon (K:Ar) dating]] at about 4.4 billion years.<ref>Peck, 2000, p.376.</ref>

The currently-proposed age is 4,500 million years, based in part on rocks dated by [[Potassium-argon dating|Potassium-argon (K:Ar) dating]] at about 4,400 millions years.<ref>Peck, 2000, p.376.</ref>

== Bibliography ==

== Bibliography ==