Our Earth - How Old Is It?

The video explores the history of mining and the discovery of fossils, leading to the development of geology. It explains sedimentation and the role of catastrophes in shaping the Earth. The video also discusses how radioactivity helped determine Earth's age, revealing it to be 4.6 billion years old. The narrative highlights the gradual and catastrophic processes that have shaped our planet over millions of years.

How did the discovery of radioactivity change the understanding of Earth's age?

What are the implications of the age of the Earth being 4.6 billion years?

What does the time machine analogy illustrate about Earth's history?

What is the significance of the Cambrian period in the fossil record?