jan 1, 1950 - Radioisotopes are first used with fossils
Description:
During the decade of the 1950’s radioisotopes were first being used to date fossils. Fossils dated back millions of years showed how organisms evolved over time to adapt to the geographic changes the earth went through. The technique used is called radiometric dating.Added to timeline:
Date:
jan 1, 1950
Now
~ 74 years ago
