p .main-container #login input[type=text], .main-container #login input[type=password] .main-container #login input[type=text] .main-container #login input[type=password] .main-container #login div .main-container .remember-forgot .main-container .main-container .main-container #login div label .main-container button .main-container #social .main-container #social span .main-container #social span.facebook .main-container #social span.google .main-container #social span.twitter .main-container #social span.yahoo .main-container .main-container .Discover the men and women behind some of the most famous inventions and innovations of history.Research almost any famous historical or current inventor with these biographies, A-to-Z charts, photo galleries, and timelines.Carbon dating is used to determine the age of biological artifacts up to 50,000 years old.
Carbon-14 cannot be used to date biological artifacts of organisms that did not get their carbon dioxide from the air.
This rules out carbon dating for most aquatic organisms, because they often obtain at least some of their carbon from dissolved carbonate rock.
The age of the carbon in the rock is different from that of the carbon in the air and makes carbon dating data for those organisms inaccurate under the assumptions normally used for carbon dating.
This restriction extends to animals that consume seafood in their diet.
As stated previously, carbon dating cannot be used on artifacts over about 50,000 years old.
These artifacts have gone through many carbon-14 half-lives, and the amount of carbon-14 remaining in them is miniscule and very difficult to detect.