Dating fossils and artifacts www datingasian com
Carbon-14 has a relatively short half life of 5,730 years. Beyond 60,000 - 80,000 years, there is too little Carbon-14 left in the sample and this technique cannot be used.
U nuclei undergo fission and the nucleus splits to form two smaller but very energetic nuclei that move away from each other.
Thousands of human fossils enable researchers and students to study the changes that occurred in brain and body size, locomotion, diet, and other aspects regarding the way of life of early human over the past 6 million years.
Millions of stone tools, figurines and paintings, footprints, and other traces of human behavior in the prehistoric record tell about where and how early humans lived and when certain technological innovations were invented.
That is, the earth accreted from small, cold chunks of material and then heated up at a later time.