Cómo Saber La Edad de un Planeta

The video explains how Earth's surface appears young due to constant renewal processes like volcanic activity and tectonic movements. It discusses how rocks are dated using radioactive decay, particularly focusing on the ocean floor's age gradient. Zircons, a durable mineral containing uranium, provide insights into Earth's ancient history, revealing that the planet formed at least 4.4 billion years ago. Despite Earth's attempts to conceal its age, zircons help scientists uncover its true history.

Explain the significance of uranium and lead in dating zircon crystals.

What does the discovery of ancient zircon grains tell us about the Earth's formation?