The tempo of human evolution.
D001128:Argon; D005075:Biological Evolution; D002250:Carbon Radioisotopes; D002980:Climate; D006801:Humans; D008280:Magnetics; D008722:Methods; D010163:Paleontology; D011194:Potassium Isotopes; D014501:Uranium
D002250:Carbon Radioisotopes; D011194:Potassium Isotopes; D014501:Uranium; D001128:Argon