What is the age of the earth? by Ed Killingsworth https://padlet.com/gonzo4428/8e6ebh7oo62o In 1956 Clair Patterson, a scientist at Caltech correctly calculated the earth's age at 4.5 billions years old. en-us 2017-03-04 20:27:02 UTC 2025-10-04 02:05:44 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Planets.png 1658 Bishop Ussher stated that the earth was created in 4004 B.C.E. gonzo4428 https://padlet.com/gonzo4428/8e6ebh7oo62o/wish/157802538 2017-03-04 20:34:52 UTC https://padlet.com/gonzo4428/8e6ebh7oo62o/wish/157802538 1956 Clair Patterson calculated that the earth was 4.5 billion years old. gonzo4428 https://padlet.com/gonzo4428/8e6ebh7oo62o/wish/157802667 2017-03-04 20:38:39 UTC https://padlet.com/gonzo4428/8e6ebh7oo62o/wish/157802667 1862 Kelvin estimated the age of the earth was 98 million years. gonzo4428 https://padlet.com/gonzo4428/8e6ebh7oo62o/wish/157802981 2017-03-04 20:46:19 UTC https://padlet.com/gonzo4428/8e6ebh7oo62o/wish/157802981 1905 Ernest Rutherford suggested using radioactivity to estimate the age of the earth. gonzo4428 https://padlet.com/gonzo4428/8e6ebh7oo62o/wish/157803132 2017-03-04 20:50:40 UTC https://padlet.com/gonzo4428/8e6ebh7oo62o/wish/157803132 1637 Rene Descartes writes Discourse on the Method gonzo4428 https://padlet.com/gonzo4428/8e6ebh7oo62o/wish/157803242 2017-03-04 20:53:48 UTC https://padlet.com/gonzo4428/8e6ebh7oo62o/wish/157803242