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"https://interestingengineering.com/feed" rel="self"> hourly1https://inteng-storage.s3.amazonaws.com/icons/square.png'''Carbon-14''' (14C), or '''radiocarbon''', is a [[radioactive isotope]] of [[carbon]] with an [[atomic nucleus]] containing 6 [[protons]] and 8 [[neutrons]]. Its presence in organic materials is the basis of the [[radiocarbon dating]] method pioneered by [[Willard Libby]] and colleagues (1949) to date arch| type_species = [[Pusa hispida]]
| subdivision_ranks = Species
| subdivision = ''[[Pusa caspica]]''
''[[Pusa hispida]]''
''[[Pusa sibirica]]''
}}
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