Carbon-14 dating

Carbon-14 dating uses the predictable radioactive decay of carbon-14 to determine the age of organic materials. This technique allows scientists to accurately measure how long it has been since a plant or animal died.
 Willard Frank Libby United States 1947 Carbon-14 dating

Carbon-14 dating uses the predictable radioactive decay of carbon-14 to determine the age of organic materials. This technique allows scientists to accurately measure how long it has been since a plant or animal died.