A Brief History of Geologic Time

The video explores Earth's 4 billion-year history, focusing on the geologic timescale and key events that shaped life. It covers the development of stratigraphy, the identification of eons and eras, and the evolution of life from single-celled organisms to humans. The video highlights major extinction events, such as the Great Dying and the KPG extinction, and discusses the rise of mammals and human impact on the planet.

What evidence suggests that early life may have formed during the Hadean eon?

What was the Cambrian explosion and why is it significant?

Discuss the causes and effects of the Cretaceous-Paleogene extinction event.

In what ways have humans impacted the Earth's biosphere?